A REVISION OF THE NORTH AMERICAN ICHNEUMON-FLIES OF THE SUBFAMILY OPIINAE.
B_y A. B. Gahan,Of the Bureau oj Entomology, United States Department of Agriculture.
It is the intention to present, in the following pages, a synopticrevision of the Braconid subfamily Opiinae for North America,including only those Mexican and West Indian species the types orparatypes of which are in the United States National Museum.Keys to genera and species are accompanied by descriptions ofnineteen new species, together with some notes on described forms.With the exception of seven species described by H. L. Viereck,the types of which are in the Snow collection at the University ofKansas and not obtainable, type or paratype specimens of all thedescribed species have been studied. Through Prof. S. J. Hunter,entomologist of Kansas University, notes on the Viereck types wereobtained which, together with the original descriptions, have per-mitted the placing of these species in the keys.Thanks are due and are cheerfully accorded to the Rev. V. A.Huard, of the Provincial Museum, Quebec, Canada, for the loan of theProvancher types, and to Prof. S. J. Hunter for the notes alreadyreferred to. Superfamily ICHNEUMONOIDEA.Family BRACONIDAE.Subfamily OPIINAE.1862. Opioidae Foerster, family 24, Verb. d. Naturh. ver-Preuss. Rheinl. , vol. 19,pp. 229, 258.1885. Opiides Marshall, Trans. Ent. Soc. London, p. 11.1887. Opiinae Cresson, Syn. Hym. North America, pp. 56, 61.1888. Opiidae Marshall, Spec. d. Hym. d. Eur., vol. 4, p. 67.1901. Opiinae Ashmead, Proc. U. S. Nat. Mus., vol. 23, pp. 112, 133.1904. Opiinae Szepligeti, Wytsman's Genera Insectonim, Braconidae, pp. 5and 158.Head transverse; occiput (except in the genus Ademon) nevercompletely margmed though usually margined at the sides; mandi-bles crossing at the tips and bi-dentate at apex; clypeus either fittingProceedings U. S. National Museum, Vol. 49?No. 2095. 63
64 t'ROCEEDINOS OF THE NATIONAL MUSEUM. vol.49.
close to the mandibles or arcuated anteriorly leaving a transverse,elliptical opening between; antennae filiform. Thorax rather shortand robust, the parapsidal grooves present or absent; anteriorwings with three cubital cells, radial cell complete (open in thegenus Ademon) and terminating at or somewhat before the wingapex though never shorter on the anterior margin of the wing thanthe length of the stigma, submedian cell usually a little longer thanthe median cell, anal cell never divided by a transverse nervure;posterior wing with the radius usually effaced, the submedian cell asmeasured on the median nervure at least one-third the length of themedian. Legs normal, the posterior tibial spurs short. Abdomeninserted between the posterior coxae, subsessile or subpetiolate,usually shorter than the combined head and thorax, ovate or ellip-tical, the apical segments often somewhat retracted in the female;ovipositor variable, more often concealed or very short but frequentlyas long as the abdomen or even longer.Many Opimae are not readily separated from some of the smallerBraconinae while others can easily be mistaken for small Alysiids.They can be distinguished from Braconines, however, by the longersubmedian ceU of the hind wing and the slightly different characterof the opening between the clypeus and mandibles. From Alysiidsthey may always be distinguished by the mandibles.The group offers a few good characters for the separation of speciesbut does not yield itself readily to separation into well-defined genera.Many of the recorded genera are based upon trivial and unreliablecharacters which make their retention impossible.American writers have confined themselves almost entirely todescriptions of isolated species in this group. Dr. W. H. Ashmeadhas given a generic synopsis in his Classification of the Ichneumon-Flies which is, however, largely a translation from Foerster. Cres-son, Provancher, Ashmead, Viereck, and the Avriter have publisheddescriptions of species. Of those described by Provancher, only fourspecies are properly placed in Opiinae. Several of Ashmead's speciesalso prove to belong in other groups of the Braconidae while four spe-cies described by him as Alysiids are really Opiines.A number of forms are known to the writer, descriptions of whichare not included in this paper for the reason that they are repre-sented only by imperfect specimens or specimens accompanied byinsufficient data.Species of Opiinae have been recorded as parasitic on Dipterous,Coleopterous, and Lepidoperous insects. The usual hosts are phy-tophagous Diptera, belonging to the families Agromyzidae, Trype-tidae, Anthomyidae, and related families, but there can be little doubtthat some species do attack Lepidopterous leaf-miners. That any areparasitic on Coleoptera remains to be proven.
NO. 2095. Tin; liRACONrD f^UnPAMILY OPTINAE?GAHAN. 65Silvestri's observations on the parasites of African fruit flies * andmy own experience indicate that the egg of the parasite is apparentlyin all cases deposited in or upon the host larva in one of its immaturestages. In all instances observed, the host larva completed its devel-opment and assumed the pupal stage before being killed by the para-site. The parasitic larva then underwent its transformation in thepuparium and emerged at about the time when the adult fly wouldhave emerged.BIBLIOGRAPHY OF THE GENERA AND THEIR SYNONYMY.Ademon Haliday, Ent. Mag., vol. 1, 1833, p. 266.Allotypus FoERSTER, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 259=Opius.Apodesmia Foerster, Vehr. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 259=Opius.Aulonotus AsHMEAD, Canad. Ent., vol. 32, 1900, p. 368=Opius.Austroopius Szepligeti, Termes Fuzetek, vol. 23, 1900, p. 64.Biophthora Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 259=Oplus.Biosteres Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 259=Opius.CephalopUtes Szepligeti, Termes Fuzetek, vol. 20, 1897, p. 600.Chilotrichia Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 258=Opius.Cryptonastes Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 260=Opius.Desmatophoriis THOMSON , Opus. Ent., 1895, p. 2194=Opius.Desmiosioma Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 260=Opius,Diachasma Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 259=Opius.Diachasmimorpha Viereck, Proc. U. S.,Nat. Mus., vol. 44, 1913, p. 641=Opius.Diraphus Wesmael, Nouv. Mem. Acad. Sc. Bruxelles, vol. 11, 1838, p. 89=Gnamp-todon.Eurytenes Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 259.Eutrichopsis Foerster, Verh. Naturh. ver. preuss. Rheinl., vol. 19, 1862, p. 260=Opius.Giardinaia Perez, Zool. Jahrb. Syst., vol. 15, 1902, p. 631.Gnamptodon Haliday, Ent. Mag., vol. 1, 1833, p. 265.Hedylus Marshall, Trans. Ent. Soc. Lond., 1891, p. 16.Holconotus Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 259=Opius.Eypocynodus Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 260=Opius.Hypolabis Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 260=Opius.Lytacra Foerster, Verh. Natuiii. ver preuss. Rheinl., vol 19, 1862, p. 258=Oplus.Mesotages Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 258=THedylus.Nosopoea Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 260=Opius.Opicllus Ashmead, Can. Ent., vol. 32, 1900, p. 368=Opius.Opius Wesmael, Nouv. Mem. Acad. Sc. Bruxelles, vol. ?9, 1835, p. 115.Phaedrotoma Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 260=Opius.Rhabdospilus Thomson, Opus. Ent., 1895, p. 2198= Opius.Rlialdospihis Foerster, Verh. Naturh. ver preusa. Rheinl., vol. 19, 1862, p. 259=Opius.
? Bull. No. .S, Div. of Ent. Hawaiian Board of AgricuUuro and Forestry.81022??Proc.N.M.vol.49?15 5
66 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40.Ehlnoplus FoERSTBE, Verb. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 258.Stenospilus Foerstee, Verh. Naturh. vcr preuss. Rheinl., vol. 19, 1862, p. 259=iOplus.Stiropius Cameron, Journ. Roy. Agri. and Com. Soc. British Guiana, 1911, p. 329.Sulydus BuYssoN, Ann. Soc. Ent. Fr., 1897, p. 354.Thcrobolus Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 260=Opius.Trichopius Thomson, Opus. Ent., 1895, p. 2176=Opius.Trigonospilus Ashmead, Proc. U. S. Nat. Mus., vol. 23, 1901, p. 134=?Opius.Utetes Foerster, Verh. Natxirh. ver preuss. Rheinl., vol. 19, 1862, p. 261=Opius.Zetetes Foerster, Verh. Naturh. ver preuss. Rheinl., vol. 19, 1862, p. 258=Opius.The treatment of the genera as given here does not differ radicallyfrom that by Szepligeti except that the genera Biosteres and Diach-asma are combined with Ofius. After a careful study of all theavailable material, including a number of European species, thewriter is convinced that it is impossible to point out any characteror group of characters that will always separate these groups. Theextremes of the genus Opius as thus constituted appear at firstglance to be quite different insects, but there is such a perfect grada-tion and duplication of characters from one type to the other that Iam compelled to believe that they should constitute but one genus.The name Biosteres has been shown by Viereck ^ to be isogenotypicwith Opius Wesmael, and to attempt to retain the old grouping wouldnecessitate changing the generic names of the majority of describedOpiinae.Stiropius is a genus described by Cameron from South Americasince the publication of Szepligeti's monograph.Giardinaia, described by De Stefani Perez, is too insufficiently char-acterized to permit of its being placed in the key. It may or maynot be an Opiine.DiascTiasmimorpha Viereck, described from India, can not be dis-tinguished from Opius as here defined.Trigonospilus Ashmead, the type of which has not been located, isbelieved also to be an Opius.Key to the genera.
1. Occiput completely margined; radial nerviire effaced before attaining the wingmargin ; body rugulosely sculptured Ademon HaUday
.
Occipital carina incomplete; radial neivure attaining the ^\?ing margin; bodyusually smooth and polished 2.2. Suturiform articulation deep, foveolate, and strongly arched, the convexity of thearch toward the apex of the abdomen; third tergite with an oblique furrow fromthe anterior middle to the lateral margins Gnamptodon Haliday.Suturiform articulation obsolete, or if defined, then straight, shallow, and notfoveolate; third tergite without oblique furrows 3.3. Clypeus three-toothed Sulydus Du Buysson.Clj'peua not three-toothed 4.4. Clypeus with a stout horn Rhinoplus Foerster.Clypeus without a horn 5.
1 Bull. S3, U. S. Nat. Mus., 1914, p. 21.
i
I
NO. 20yo. THE URACONID SUBFAMILY OPIINAE?GAHAy. 675. First and second abdominal tergites with a median carina; second abscissa of radiusnot longer than the second transverse cubitus Stiropiits Cameron.Second tergite always without a median carina; second abscissa of radius usually-longer than the second transverse cubitus 6.6. Face with two stout horns Cephaloplites Szepligeti.Face without horns 7.7. First cubital cross vein thicker than the other veins Aiistroopiiis Szepligeti.First cubital cross vein normal 8.8. Radius arising from the extreme base of the stigma Eurytenes Foerster.Radius arising distinctly beyond the base of stigma 9.9. Abdomen subpetiolate, the first tergite at least three times as long as broad; sub-discoidal nervure arising from the upper angle of the second discoidal cell; secondcubital cell short, the second radial abscissa scarcely longer than the secondcubital crossvein Hedylus Marshall.Abdomen subsessile or sessile, the first tergite not three times as long as broad;subdiscoidal nervure arising at or below the middle of the second discoidal cell;second abscissa of radius longer Opius Wesmael.Genus ADEMON Haliday.This genus is characterized by the completely margined occiput,the open radial cell, and the rugulose sculpture of the body. Therecurrent nervure joins the first cubital cell some distance before thebasal nervure, the second abscissa of radius is about equal to thefirst cubital cross vein, and the stigma is rather long and narrow.Ashmead placed the genus in his tribe Rhyssalini, but both Marshaland Szepligeti have placed it with the Opiinae. The ^vriter doubtsits aflBnity with the Opiinae, but has included it here for want of abetter understanding of its relationship.ADEMON NIGER Ashmead.Rhyssalus niger Ashmead, Bull. 111. St. Lab. Nat. Hist., vol. 4, 1895, p. 276.Male.?Length 2 mm. Head, thorax, and abdomen to apex ofthird segment finely coriaceous and opaque; head transverse nar-rowed behind, the posterior orbits receding and broader than thewidth of the eyes ; face rugose, the clypeus smooth, less than twice asbroad as long and apphed close to the mandibles ; occiput concave, theoccipital carina prominent; vertex behind the ocelli with a smallsubtriangular smooth area bounded by sharp carinae ; antennae veryslender, 24-jointed, the first flagellar joint much longer than the secondand following joints; mesoscutum with the parapsidal grooves effacedexcept anteriorly; mesopleurae with a crenulate impression belowpropodeiun irregularly rugose with a median longitudinal carina;wings longer than the whole body, the stigma long and narrow; legsvery long and slender; abdomen ovate, about as long as the head andthorax, its first tergite much wider at apex than at base; sutm'iformarticulation distinct, the third segmnet not half as long as the second
;
apical segments smooth. Body color brownish-black; antennal pedi-cel, mandibles, all coxae, and all femorae yellow; apices of femorae,
68 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40.
all tibiae, and all tarsi dark brown; antennae black; wing veins andstigma pale brownish.Habitat.?Havana, Illinois.Four specimens bearing Illinois State Laboratory of Natural His-tory, No. 13068. According to Mr, C. A. Hart these specimens weretaken by him September 23, 1894, on the shore of Quiver Lake, nearHavana, Illinois, where they were found running about on the surfaceof duckweed {Lemna).Genus GNAMPTODON Haliday.This genus is like Opius, except that the second abscissa of radiusis scarcely longer than the first abscissa, the second cubital cell veryshort, and the abdomen is quite different, the suture between thesecond and third tergites being deep, foveolate, and strongly arched,while the third tergite has an oblique furrow from the anterior middleto the lateral margins. The second tergite has a transverse, smooth,slightly raised area at base.GNAMPTODON NEPTICULAE Rohwer.Plate 34, fig. 1; plate 35, fig. 13.Gnamptodon nepticulae Rohwee, Proc. U. S. Nat. Mus., vol. 49, 1915, p. 229.Halitat.?Virginia.Host.?Nepticula castaneaefolieUa.Genus OPIUS Wesmael.The genus is sufficiently characterized in the description of thesubfamily and the generic key. As here constituted the genusincludes the vast majority of the American species of Opiinae.Key to the species of Opius.1. Second abscissa of radius shorter or scarcely longer than the first cubital crossvein 2.Second abscissa of radius longer than the first cubital cross vein 11.2. Mesopleiu*ae striate, the striae arcuately curAdng from the superior to the posteriormargin ; abdominal tergites wrinkled secundus Viereck.Mesopleurae not striate; abdominal tergites not all wrinkled 3.3. Dorsum of the mesothorax granularly sculptured; first transverse cubitus nearlyobsolete; parapsidal grooves impressed and terminating posteriorly in a striatearea; first and second abdominal tergites and basal border of the tliird striate.appalachicolus Viereck'Dorsum of the mesothorax smooth; first transverse cubitus distinct; parapsidalgrooves incomplete and rarely terminating in a striate area; first and secondtergites sometimes striate. 4.4. Malar space longer than the mdth of a mandible at base 5.Malar space shorter than the width of a mandible at base 10.5. Posterior wing with a distinct postnervellus;' ovipositor strongly exserted 6.Posterior wing without a distinct postnervellus; ovipositor short 8.
1 The name postnervellus is applied to a crossvein or stub of a vein, interstitial -with the basal nervurein the posterior wing, and extending backward toward the posterior margin of the wing, parallel withthe nervellus.
NO. 2095. THM BRACONID SUBFAMILY OPIIiVAiJ?GAHAN. 696. Second tergite striate; wings hyaline mellem, new species.Second tergite smooth ; wings blackish or fuscous 7.7. Clypeus anteriorly produced medially into an obtuse angle; mesopleural impres.sion smooth crawfordi Viereck.Clypeus anteriorly truncate or only slightly rounded; mesopleural impressioncrenate sanguineus Ashmead.8. Mesopleurae with a crenate impression 9.Mesopleiural impression smooth kukakense Ashmead.also indotatus Viereck.9. First abscissa of radius almost as long as the second and nearly half the length ofthe transverse cubitus; parapsidal grooves impressed to the middle of themesoscutum politus Provancher.First abscissa of radius not half the length of the second and not more than one-third the length of the first cubital cross vein; parapsidal grooves effaced exceptat the anterior lateral angles of the mesoscutum anthomyiae Ashmead.10. Mesopleural impression smooth; postnervellus absent; ovipositor scarcely ex-serted; color black foveolatus Ashmead.Mesopleural impression crenate; postnervellus present; ovipositor longer than theabdomen ; color stramineous fenugineus, new species.11. Eyes small and nearly circular; malar space longer than the width of a mandible;mesopleural impression strongly crenate; mesoscutum without an impressionmedially in front of the scutellum; second tergite striate; ovipositor nearly aslong as the abdomen; length, 4.25 mm.; head, tegulae, legs, and abdomenbeneath pale yellow; rest of body black flaviceps, new species.Eyes distinctly oval; malar space shorter than the width of a mandible, or, iflonger, then not combining all of the above characters 12.12. Eyes distinctly diverging below and unusually large; ocell-ocular line hardlytwice as long as the greatest diameter of an ocellus; malar space about half aslong as the width of a mandible; wings fuscous; ovipositor about half thelength of the abdomen; body-color testaceous; head and legs blackish.vierecH, new species.Eyes not especially large and not diverging below; ocell-ocular line usually dis-tinctly more than twice as long as the diameter of an ocellus; if shorter, thennot combining all of the above characters 13.13. Ovipositor as long as the body; posterior orbits about as broad as the diameter ofthe eye; clypeus and mandibles hardly separated; mesopleural impressionsmooth; mesoscutum without a median impression; antennae inserted aboutthe middle of the eyes, 47-iointed; hind tibiae, all tarsi, the eyes and ocelliblack; rest of the body pale testaceous 6rM?mei7ams, new species.Ovipositor much shorter; otherwise not combining all of the above characters. . 14.14. Head unusually thick antero-posteriorly, apparently not more than twice asbroad as long as seen from above; posterior orbits broad and only slightlysloping; broad opening between mandibles and clypeus; mesoscutum withouta median impression; mesopleural impression smooth; ovipositor half as longas the abdomen; head and thorax black; legs and abdomen testaceous; length3.5 mm crassiceps, new species.Head more transverse, appearing more than tvvdce as broad as long; orbits some-times broad but usually more sloping; otherwise not combining all of the abovecharacters 15.15. Second abdominal tergite sculptured; suturiform articulation usually evident. 47.Second tergite smooth; suturiform articulation usually obsolete 16,IG. Parapsidal grooves complete; antennae ringed with white 17.Parapsidal grooves incomplete; antennae not ringed with white 18.
70 I^ROCEEDINGS OF THE NAT10i\AL MUHEUM. vol. 49.17. General color reddish yellow; recurrent nervure joining the first cubital cell;antennal joints 16-19 inclusive white ashmeadi Dalle Torre.General color black; recurrent nervure joining the second cubital cell; antennaljoints beyond the 14th to the apex white, the two apical joints fuscous.cincticornis, new species.18. Mesoscutum with a median dimple-like impression or longitudinal slit in frontof the scutellum 19.Mesoscutum without a median impression 32.19. Mesopleurae with a crenulate or foveolate impression below the middle 20.Mesopleural impression smooth or absent 28.20. Mandibles and clypeus fitting close together, without a distinct opening be-tween 27.Mandibles and clypeus separated by a distinct opening 21.21. Median impression on the mesoscutum slit-like, extending to or beyond themiddle of the mesoscutum; yellowish species 22.Median impression on the mesoscutum not extending forward to the middle ofthe mesoscutum; (blackish species except anastrephae) 23.22. Forewing from its base to apex of stigma fuscous; ovipositor nearly half as longas the abdomen fuscipennis, new species.Fore^ving not fuscous; ovipositor short canaliculatiis, new species.23. 0-\dpositor nearly half as long as the abdomen; body color uniformly stramine-ous anastrephae ViereckOvipositor scarcely exserted; not uniformlj'^ stramineous 24.24. Head, except a spot surrounding the ocelli, yellow; antennae inserted about themiddle of the eyes provancheri Dalle Torre.Head blackish ; antennae inserted a little above the middle of the eyes 25.25. General color piceo-succineus, the head -above, dorsum of the mesothorax, andapex of abdomen brownish or piceus; length about 2 mm. .succineus Gahan.Head and thorax polished black 26.26. Abdomen except the first tergite yellow brunneiventris Cresson.Abdomen except the second tergite black cinctm Provancher.27. Mandibles with a distinct tooth on the ventral margin near the base.viandibularis, new species.Ventral margin of the mandibles without a distinct tooth utahensis Gahan.28. Mandibles vfith. a distinct notch or tooth on the ventral margin near the base. . 29.Ventral margin of the mandibles without a notch or tooth at base 31.29. Propodeum not coarsely rugose, more or less shining; stigma long and narrow;median impression on the mesonotum very slight, almost obsolete; first tergitenearly twice as long as broad and distinctly striate; first abscissa of radius ratherlong amplus Ashmead.Propodeum rather coarsely rugose; stigma subtriangular; median impression onthe mesonotum deep and distinct 30.30. Length 3.5 mm basinigcr Viereck.Length 2.75 mm foersteri, new species.31. Sides of the thorax and more or less of the dorsum brown or castaneous; tegumentsurrounding the median impression on the mesoscutum rugulose.nigrocastaneous Viereck.Thorax wholly black; mesoscutum wholly smooth coloradensis, new species.32. Recurrent nervure joining the first cubital cell; mesoscutum conspicuously hairyall over 33.Recurrent nervure interstitial or joining the second cubital cell; mesoscutumnot conspicuously hairy 34.
NO. 2095. 77//; JiRACOMD SUHFAUILY OPIIXAE?(!AHAy. 7133. Propodeum with a median longitudinl carina; mesopleurae above the crenateimpression smooth rufocinctus, new species.Propodeum without a median carina; mesopleurae above the crenate impressiondistinctly reticulated apicalis, new species.34. Mesopleural impression crenate or foveolate 35.Mesopleural impression smooth 43.35. Head above, sides of thorax, and propodeum dark castaneous; face yellowish;propodeum nearly smooth; antennae 24-jointed in the male type.tibialis Ashmead.Head differently colored; thorax either wholly black or wholly pale yellow;propodeum usually rugose though not always 36.36. Uniformly pale yellow species 42.Black species, the head and abdomen sometimes marked with yellowish 37,37. Head with the face and orbits, at least, yellow 38.Head black or with only the lower part of face yellowish 39.38. Mandibles fitting close to the clypeus; mesopleural impression only slightlyruo'ulose luteiceps Viereck.Mandibles and clypeus separated by a distinct opening; mesopleural impressionstrongly crenate aberrans Viereck.39. Length about two and one-half millimeters; propodeum rugose all over; antennae29-iointed in the type unifasciatus Ashmead.Length about one and one-half millimeters; propodeum not entirely rugose, moreor less shining, and indistinctly sculptured or smooth 40.40. Second abscissa of radius more than twice as long as the fii*st transverse cubitus;propodeum smooth; first terglte nearly smooth and dark red or piceus in color;second tergite piceus ynontanus Ashmead.Second abscissa of radius distinctly less than twice as long as the first transversecubitus; propodeum not wholly smooth 41.il. First tergite granularly sculptured and pale yellow; second tergite also palevellowish ? dimidiatus Ashmead.First tergite not granularly sculptured, black; second tergite blackish.tantillus Ashmead
.
42. Face practically smooth; recurrent nervure interstitial; antennae in the femaletype 29-iointed interstitialis Ashmead.Face rugulose; recurrent nerviu-e joining the lower angle of the second cubital cell;antennae in the female type 24-jointed insularis Ashmead43. Maiidibles with a distinct notch or tooth on the ventral margin near the base;radial cell short and broad, terminating much before the extreme wing-apex.ehrhomi, new species.Mandibles without a tooth or notch on the ventral margin; radial cell terminatingonly a little above the extreme wing-apex 44.44. Color testaceous or stramineous 45.Color black ^^ ?45 Propodeum poUshed, smooth commodus, new species.Propodeum opaque, rugose diastatae Ashmead.4() Propodeum and first tergite smooth; mesopleural impression absent or nearly so;legs fuscous, their coxae blackish bmneipes Gahan.Propodeum rugulose laterally and posteriorly; mesopleiu-al impression presentbut smooth; legs including coxae pale .aridis Gahan.47 Face granularly rugulose; malar space distinctly longer than the width of a man-dible at base saimni Ashmead.Face not granularly rugulose; malar space not distinctly longer than the baseof mandible
72 PROCEEDJMiS OF THE NATIONAL MUSEUM. vol. 49.48. Ovipositor about half as long as tlie abdomen; two diverging fuiTows on the secondtergite prolonged nearly to the suturiform articulation . . melanocephalus Aehmead
.
0\apositor concealed or very short; diverging furrows on the second tergite im-pressed only at the base of the tergite 49.40. Thorax depressed, flattened above, wider between the wings than high dorso-ventrally ; coalesced second and third tergites granularly sculptured from baseto apex siriativentris, new species.Thorax not depressed nor flattened above, not broader between the wings thanhigh; coalesced second and third tergites sculptured before the suturiformarticulation and either smooth or sculptured behind 50.f)0. Coalesced second and tliird tergites sculptured from base to apex, or at leastbeyond the suturiform articulation ; propodeum smooth or very finely rugu-lose 51.Coalesced second and third tergites smooth beyond the suturiform articulation;propodeum rugose all over 53.51. Propodetnn smooth and polished; second tergite black or blackish.suturalis Gahan.Propodeum finely rugulose at least laterally and posteriorly; second tergite yel-lowish 52.
r^2. Propodeum opaque, granularly punctate all over; coalesced second and thirdtergites wholly reddish stramineous, following segments only slightly darker;pleurae and propodeum reddish gracillariac, new species.Propodeum finely punctate laterally and posteriorly, more or less shining above;first tergite blackish; coalesced second and third tergites beyond the suturiformarticulation black as are the following tergites; propodeum and pleurae black.nanus Provancher.5.3. Mandibles with the ventral margin complete; mesopleui-al impression crenulate.oscinidis Ashmead.Mandibles with a deep notch or tooth on the ventral margin near the base; meso-pleural impression smooth amerkanus, new species.OPIUS SECUNDUS Viereck.Diachasma secunda Viereck, Trans. Kansas Acad. Sci., vol. 19, 1905, p. 272.The type of this species has not been seen by the wTiter and itmay prove not to be an Opiine. The striate mesopleurae and thewrinkled abdominal tergites apparently distinguish it from any otherspecies in our fauna.Habitat.?Kansas.Host.?Unknown. OPIUS APPALACHICOLUS Viereck.Diachasma ajrpalachicola Viereck, Trans. Kansas Acad. Sci., vol. 19, 1905, p. 273.Type in the Snow collection and not examined. Apparently differsfrom all other species in the granularly sculptured dorsum of thethorax.Hahitat.?Kansas.
.ffosi.?Unknown?
NO. 2095. THE BRAVOlSlD SUBFAMILY OPIINAE?GAHAN. 73OPrUS MELLEUS, new species.Female.?Length 3 mm. Antennae longer than the body, 43-jointed in the type, the first flagellar joint about equal to the scape;head transverse, the vertex smooth and shining; frons smooth andbare medially but with a few obscure punctures and fine hairs towardthe eye margins ; eyes broadly elhptical, very slightly narrowed belowand wider than the posterior orbits; face below antennae punctateand hairy with a slight median ridge which terminates some distanceabove the clypeus; clypeus punctate, about twice as wide as longdown the middle, fitting close to the mandibles, its anterior marginrounded. Thorax sparsely pubescent, the hairs thickest on thepropodeum and mesosternum; mesoscutum polished, trHobed, theparapsidal grooves nearly complete to the median slit-like impressionin front of the scutellum ; mesopleurae with an impressed crenate areabelow, otherwise mostly smooth; propodeum irregularly rugose.Wings hyaline ; stigma broad, the radius arising from about the middleof stigma and attaining the wing margin above the extreme wing-apex about the length of the second transverse cubitus ; first abscissaof cubitus shorter than half the width of stigma, second abscissa aboutequaling the first transverse cubitus; recurrent nervure interstitial;posterior wing with a distinct postnervellus. Abdomen ovate, alittle longer than the thorax ; first tergite striate with strong lateraland sublateral carinae; second tergite smooth laterally but with themedian area strongly striate from the base to the subobsolete suturi-form articulation, third and following tergites smooth; ovipositorexserted the length of the body ; eyes, ocelli, flagellum, and ovipositorsheaths black; apical two-thirds of the posterior tibiae, their tarsi,the apical joint of the median and anterior tarsi, and the wing veinsand stigma dark brown ; remainder of the body reddish stramineous.Type-locality.?Mount Washington, New Hampshire.r^/pe.?Cat. No. 19356, U.S.N.M.Described from one specimen. Ashmead's manuscript name isadopted. OPIUS CRAWFORDI Viereck.Diachasma crawfordi Viereck, Proc. U. S. Nat. Mus., vol. 40, 1911, p. 181.Diachasma craivfordi Keilin and Picado, Bull. Sci. France et Belg., 1913, vol. 47,No. 2, p. 203, pi. 1.This is a large yellowish species easily distinguished from all othersby the characters given in the table of species. There can be nodoubt of the synonymy of the Keilin and Picado species with thatof Viereck. The figure given by the former establishes the identitybeyond question.Habitat.?Mexico.Host.?Anastre'pha striata.
74 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49.OPIUS SANGUINEUS Asbmead.Plate 35, figs, la, 16.Phaedrotoma sanguinea Ashmead, Proc. U. S. Nat. Mus., 1888, p. 655.Opius sanguinca (Ashmead) Marshall, Trans. Ent. Soc. Lond., 1891, p. 47.Phaedrotoma sanguinea Ashmead, Insect Life, vol. 5, p. 135.Habitat.?District of Columbia and Missouri.Host.? Trypeta electa.OPIUS KUKAKENSE Ashmead.Desmiostoma kukakeme Ashmead, Proc. Wash. Acad. Sci., vol. 4, 1902, p, 251.Habitat.?Alaska.Host
.
?Unknown. OPIUS INDOTATUS Viereck.Biosteres indotatus Viereck, Trans. Kansas Acad. Sci., vol. 19, 1905, p. 273.This species has not been recognized and it can not be separatedfrom the foregoing species by the original description.Habitat.?Kansas.Host.?Unknown. OPIUS POLITUS Provancher.Plate 35, fig. 5.Opius politus Provancher, Nat. Canad., vol. 14, 1883, p. 16.Opius politus Provancher, Faun. Canad. Hymenop., 1883, p. 804.Hedylus politus Provancher, Add. Faun. Canad. Hymenop., 1888, p. 381.Very similar to antJiomyiae but differing in the chai'acters madeuse of in the table of species.Habitat.?Canada and New York.Host.?Unknown. OPIUS ANTHOMYLAE Ashmead.Plate 35, fig. 6.Opiu^ anthomyiae Ashmead, Proc. U. S. Nat. Mus., 1888, p. 664.Habitat.?Michigan.Host.?A dipterous leaf-miner in dock.OPIUS FOVEOLATUS Ashmead.Plate 35, fig. 3.Opiusfoveolatus Ashmead, Proc. U. S. Nat. Mus., 1888, p. 654.A series of specimens of this species have been reared by the writerat College Park, Maryland, from leaves of Chenopodium album, minedby Pegomyia, sp.Habitat.?Maryland and Iowa.Host.?Pegomyia, sp.
NO. -'Oit.-.. THE BRACONID SUBFAMILY OPIINAE?GAHAN. 75OPIUS FERRUGINEUS, new species.Female.?Length 2 mm. Antenna longer than the body, 34-jointed in the type, the first joint of the flagellum about equal to thescape, joints toward the apex only a little longer than wide; headtransverse; eyes elliptical, very slightly narrowed ventrally, widerthan the posterior orbits; vertex and frons polished, very sparselyhairy; face below antennae hairy, with sparse obscure punctures anda distinct median ridge from the antennal line to the clji^eus ; clypeusshort, transverse, its anterior margui somewhat concave, leaving awide opening between it and the mandibles. Thorax smooth,sparsely hairy, the hairs thickest on the propodeum and mesosternum;mesoscutum trilobed, the parapsidal grooves obsolete on the posteriorhalf, a deep dimple-like fovea medially just in front of the scutellum;scutellum smooth; mesopleurae with a crenulate impression; pro-podeum rugose. Stigma of ihe forewing broad and triangular, theradius arising from about the middle; first radial abscissa about one-third as long as the stigma is wide; second abscissa very slightlylonger than the first transverse cubitus ; radial cell short, terminatingabove the extreme wing-apex a distance about equal to the combinedfirst and second abscissae of radius; second cubital cell narrowedoutwardly; recurrent nervure joining the second cubital cell closeto the basal nervure. Abdomen ovate, not longer than the thorax,its first tergite slightly longer than broad, with sublateral carinaefrom base to apex, the posterior half of the tergite between thecarinae rugulose; segments beyond the first smooth; ovipositorexserted about one and one-half times the length of the abdomen.Eyes, spot enclosed by the ocelli, and the flagellum black; scape andpedicel brown; posterior tibiae except basally, all of the posteriortarsi and the terminal joint of the median and anterior tarsi brownish;wing veins and stigma yellowish-brown ; ovipositor sheaths blackish
;
remainder of the body stramineous.Male.?Antemiae thirty-nine jointed in the type; abdomen brown-ish on the dorsum and not so broad as in the female; otherwiseessentially Uke the female.Type.?C&t. No. 19357, U.S.N.M.Described from a female and a male in the United States NationalMuseum, bearing the number 18814, which is an accession number ofthe Illinois State Laboratory of Natural History. Mi*. C. A. Hart, ofthe latter institution, kindly furnished the following information fromtheir records: "Taken in sweepings along the shores of Lake Geneva,in Wisconsin, August 31, 1892."
76 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49.OProS FLAVICEPS, new Bpecles.Female.?Length 4.25 mm. Head transverse, a little wider thanthe thorax; face sUghtly hairy and indistinctly pmictate, with amedian ridge; clypous trmicate anteriorly, a little more than threetimes as wide as long down the middle and distinctly separated fromthe mandibles by a transverse opening; malar space slightly longerthan the width of a mandible at base; eyes protruding and nearlycircular; occipital carina strongly developed at sides of the head,absent behind the vertex; ocell-ocular line more than three times thediameter of an ocellus; mesoscutum polished, without a medianimpression posteriorly, the parapsidal grooves effaced except at theextreme anterior lateral angles; scutellum smooth; mesopleural im-pression broadly ovate and distinctly crenate; propodeum coarselyrugose; wings hyaline, the stigma broadly lanceolate; recurrent ner-vure joining the second cubital cell some distance below the basalnervure; first radial abscissa shorter than half the width of stigma,second abscissa slightly more than one and one-half times the lengthof the first transverse cubitus; radial cell long and terminating some-what above the extreme wing-apex. Abdomen long-ovate, its firsttergite not much longer than broad and coarsely longitudinallystriate, with strong sublateral carinae originating near the lateral basalangles and curved inward; suturiform articulation evident, secondtergite striate, broad lateral margins of the second tergite and thethird and following tergites smooth; ovipositor exserted nearly thelength of the abdomen. Head except eyes, a spot enclosed by theocelli, and the apices of mandibles stramineous; scape stramineous;flagellum black; thorax and dorsum of abdomen black, the venterof abdomen yellowish; legs including coxae pale stramineous; wingveins and stigma dark brown.Type.?Cut. No. 19358, U.S.N.M.One female specimen labelled Iowa Exp. Sta., Accession Catalog716. Mr. J. E. Guthrie, of the Iowa Agricultural College, informs methat under the above accession number appears the following data:"Taken at Ames, la., by C. P. Gillette, July 4, 1890, sweeping infields and woods." OPIUS VIERECKI, new species.Plate 34, fig. 2.Female.?Length 4.5 mm. Head transverse, narrow antero-pos-teriorly, the posterior orbits above narrow and sloping; eyes verylarge; face smooth with a median ridge from the antennae to theclypeus; clypeus smooth, nearly four times as broad as long down themiddle, separated from the mandibles by a broad opening; antennaebroken; mesoscutum and scutellum smooth, polished, the parapsidalgrooves deeply impressed anteriorly, becoming indistinct on the disk
NO. 209;-.. THE BRACONID SUBFAMILY OPIINAE?GAHAN. 77
of the mesoscutum; mesopleurae smooth with an impressed oval areabelow the middle which is not strongly crenulate; propodeum rugosewith a transverse carinate line a short distance from the base and amedian longitudinal carina before it to the base; the area behind thetransverse carina is rugose medially with a large, shallow, subquad-rate pit, smooth within, at each lateral posterior angle; metapleuraesmooth with three more or less well defined large pits along the uppermargin; stigma of the forewing broad, the radius arising a little beforeits middle; second abscissa of radius about one and one-half timesthe length of the first transverse cubitus; first abscissa of radius lessthan the width of stigma; third abscissa curving slightly into theradial cell and attaining the wing margin only slightly above theextreme wing-apex; abdomen ovate, about as long as the thorax, itsfirst tergite smooth with strong sublateral carinae from base to apex,and a median carina from about the middle to the apex; followingtergites pohshed; ovipositor two-thirds the length of the abdomen.Head black, the clypeus and mandibles tinged with reddish; antennaeblack; thorax and abdomen dark stramineous; wings fuscous, theveins and stigma nearly black; all coxae and the posterior femoraeconcolorous with the thorax, rest of the legs dark reddish-brown.Type-locality.?Cuernavaca, Mexico.Type.?Csit. No. 19359, U.S.N.M.Described from one specimen labeled U. S. Dept. Agri., No. 2089.This specimen was sent to the Department of Agriculture by Mr.Koebele along with a lot of (Diachasma) Opius cramfordi and is pos-sibly a parasite of AnastrepTia striata.OProS BRUNNEITARSIS, new species.Female.?Length 5 mm. Head transverse, polished, the face im-punctate or nearly so, the clypeus with some large punctures; facewith a strong median ridge; posterior orbits nearly as wide as theeyes; mandibles and clypeus hardly separated, the latter about twoand one-half times as broad as long down the middle; malar spaceabout equal to the width of a mandible at base; ocell-ocular linemore than three times the diameter of an ocellus; thorax smoothand polished, the parapsidal grooves nearly obsolete on the posteriorhalf of the mesoscutum, which is without a median impression infront of the scutellum; mesopleural impression smooth; propodemnrugose laterally, nearly smooth medially; metapleurae smooth; firstq,bdominal tergite slightly longer than broad, rugoso-punctate be-tween the sublateral carinae, nearly smooth along the lateral mai*-gins; following tergites smooth; ovipositor about as long as theabdomen. Wings slightly infuscated on the basal half; stigma longand not broad; first abscissa of radius about equal to haK the widthof stigma, second abscissa one and one-half times the length of the
78 PROCEEDINGS OF THE RATIOSA L MVHEVM. vol.40.first tranverse cubitus. Eyes, ocelli, apices of mandibles, and an-tennae black; wing veins and stigma dark brown; all tarsi and thehind tibiae dark brown; remainder of body reddish stramineous.TV^'^.?Cat. No. 19360, U.S.N.M.Described from a single specimen labeled Ames, Iowa, withoutfurther data. OPIUS CRASSICEPS, new species.Plate 34, fig. 3; plate 35, fig. 2.Female.?Length 3.5 mm. Head transverse, smooth, more thanusually thick antero-posteriorly; posterior orbits broad and onlyslightly receding, not as broad as the eyes; face impunctate or nearlyso, the median ridge very slight and not reaching to the clypeus;eyes short oval; malar space equal to about two-thirds the width ofa mandible at base; clypeus about three times as wide as long downthe middle, the anterior margin rounded; opening between mandiblesand clypeus broad; antennae 43-jointed, the first flagellar joint aboutthree times as long as thick and scarcely longer than the second; ocell-ocular line equal to nearly three times the diameter of an ocellus ; thoraxsmooth; parapsidal grooves effaced except at the lateral anterior anglesof the mesoscutum; mesopleurae, smooth without an impression belowthe middle ; propodeum rugose. Forewing with the first radial abscissaequal to about half the width of stigma, the second abscissa more thanone and one-half times the length of the first transverse cubitus; re-current nervure interstitial; second cubical cell much narrower atapex than at base; stigma not broad. First abdominal tergite rugose,the following segments smooth; ovipositor exserted a little less thanhalf the length of the abdomen. Head and thorax black, mandiblesrufous with their apices black; scape rufous, flagellum black; sides ofprothorax, legs including coxae, and the whole abdomen rufo-strami-neous; ovipositor sheaths black; wings hyaline, veins and stigmadark brown.Type-locality.?Colorado.Type.?C^i. No. 19361, U.S.N.M.Two specimens without further data.OPmS ASHMEADI Dalle Torre.Opius annulicornis Ashmead, Journ. Linn. Soc. Lond. Zool., vol. 25, 1894, p. 136(not Thomson).Opms ashmeadii Dalle Torre, Catalog. Hymenop., vol. 4, 1898, p. 59.Habitat.?St. Vincent.Host.?Unknown. OPIUS CINCTICORNIS, new speclOB.Female.?Length 2.3 mm. Head a little more than twice as wideas long antero-posteriorly, smooth except the face, which is faintlyAvrinkled; face with a sharp median ridge; posterior orbits about.
NO. 2095. THE BRACONID miBFAMILY OFIU^AK~aAlLA:< . 79half the width of the eye; ocell-ocular line about three times thediameter of an ocellus; clypeus about twice as broad as long downthe middle and separated from the mandibles by a narrow trans-verse opening; malar space about equal to the width of a mandibleat base; antennae 24-jointed in the type, the first flagellar jointabout five times as long as thick and distinctly longer than thesecond; thorax smooth, the parapsidal grooves complete and deeplyimpressed throughout; mesopleural furrow crenate; propodeumrugose ; stigma of the forewing broadly lanceolate ; recurrent nervureinterstitial; first abscissa of radius equal to about half the width ofstigma; second abscissa a little more than one and one-half timesthe first transverse cubitus; radial cell extending to the extremeapex of wing. First abdominal tergite about one and one-halftimes as long as broad, broadening from base to apex and finelylongitudinally striate; following tergites smooth; ovipositor veryslightly exserted. Antennal joints beyond the fourteenth exceptthe two apical ones white, scape testaceous, rest of the antennaebrown; mandibles, palpi, and clypeus pale yellowish; face piceus;remainder of the head black; thorax black; legs, including coxae,pale stramineous; wings hyaline, veins and stigma pale brownish;abdomen mostly black, the second tergite stained with yellowish.Type-locality.?Oswego, New York.IV^^e.?Cat. No. 19362, U.S.N.M.Described from one specimen.OPIUS FUSCIPENNIS, new species.Female.?Length 3 mm. Head strongly transverse, mostlysmooth, the face below antennae sparsely punctate, vidth a distinctmedian ridge; clypeus punctate, with the anterior margin nearl}^straight, about four times as broad as long down -the middle andseparated from the mandibles by a transverse opening; malar spaceshorter than the width of a mandible at base ; posterior orbits abouttwo-thirds the width of the eye; ocell-ocular line equal to nearlyfour times the diameter of an ocellus; antennse 38-jointed in thetype, inserted a little above the middle of the eyes, the joints unusu-ally short, first flagellar joint a little more than twice as long asbroad, those in the middle scarcely longer than thick. Thoraxsmooth; median impression of the mesoscutum slit like and extend-ing two-thirds its length, parapsidal grooves deep anteriorly, buteffaced before joining the median impression; mesopleural impres-sion strongly crenate; propodeum rugose, with a more or less distinctirregular transverse raised hue before the middle; first abscissa ofradius equal to about two-thirds the width of stigma, which is broad
;
second abscissa of radius about one and one-third times the lengthof the first transvei-so cubitus; radial cell terminating somewhat
80 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49.above the extreme wing apex, Abdomen ovate; first tergite a littlelonger than broad and scarcely narrowed at base, with distinctsublateral carina and a slight median carina on the posterior half,the space between the sublateral carina elevated and rugose, thelateral margins of segment nearly smooth; tergites beyond the firstsmooth; ovipositor one-third the length of the abdomen. Generalcolor reddish stramineous; eyes, ocelli, antennae except scape, andovipositor sheaths black; scape, apices of mandibles, and apicaljoint of all tarsi brownish; wings to or a little beyond the apex ofstigma fuscous, hyaline at apex.Male.?Essentially like the female.Type-locality.?Carlinville, Illinois.Type.?Csit. No. 19363 U.S.N.M.The allotype is labeled Champaign, Illinois, and a paratype femaleRoslyn, Virginia. Host unknown. Ashmead's manuscript name isapphed to the species. The type was collected by Chas. Robertson.OPIUS CAKALICULATUS, new species.Female.?Length, 2.5 mm. Head strongly transverse, mostlysmooth; frons faintly punctate laterally and the face more distinctlyso, the latter with a strong median ridge ; clypeus nearly four times asbroad as long down the middle, with rather coarse sparse punctures, itsanterior margin straight and separated from the mandibles by a ratherbroad opening; malar space equal to about two-thirds the width of amandible at base; posterior orbits half the width of the eyes and dis-tinctly receding; ocellocular line about three times the diameter of anocellus; antennae inserted slightly above the middle of the eyes, 32-jointed in the type, the first flagellar joint about twice as long as thick,following joints shortening gradually; mesoscutum smooth, themedian impression slitlike and extending forward to the middle ofthe mesoscutum, parapsidal grooves deeply impressed anteriorly buteffaced on the posterior two-thirds; mesopleural impression deeplycrenulate; propodeum rugose with a transverse irregular raised line orcarina near the base; stigma of the forewing broad; first abscissa ofradius equal to about half the width of stigma ; second abscissa equalto about one and one-half times the first transverse cubitus; radialcell terminating slightly above the extreme wing apex; abdomenshort, ovate; first tergite slightly longer than broad and a little widerat apex than at base, with a median carina on the apical half andwith sublateral carinae, the space between the sublateral carinaeelevated and rugulose, laterad of these carinae smooth; followingtergites smooth; ovipositor slightly exserted. Eyes, antennae, mostof the pro- and mesopleurae and the propodeum black; head, dorsumof the thorax, the first tergite, and the legs reddish testaceous;
NO. 2095. THE BRACONID SUBFAMILY OPIINAE?GAHAN. 81tergites beyond the first paler; ovipositor sheathis black; wingshyaline.Type-locality.?College Park, Maryland.Type.?C&t. No. 19364 U.S.N.M.One specimen, collected by the writer, July 11, 1911. Verysimilar to fuscipennis except for the hyaline wings.OProS ANASTREPHAE Viereck.Plate 35, fig. 4.Opius ( Utetes) anastrephae Viereck, Proc. U. S. Nat. Mus., vol. 44, 1913, p. 563.Habitat.?Porto Rico.Host.?Anastrepha, sp.OPIUS PROVANCHERI Dalle Torre.Opius raficeps Provancher, Add. Faun. Can. Hym., 1886, p. 124 (not Wesmael)OpiuR provmicheri Dalle Torre, Cat Hym., vol. 4, 1898, p. 64.Hahitat.?Canada and New York.Host.?Unknown. OPIUS SUCCINEUS Gahan.Opius succineus Gahan, Can. Ent., vol. 45, 1913, p. 149; Journ. Agri. Research,U. S. Dept. of Agr., vol. 2, 1914, pi. 4, fig. 3.Habitat.?Indiana and Illinois.Host.?Agromyza parvicomis.OPIUS BRUNNEIVENTRIS Cresson.Opius bninneiventris Cresson, Trans Amer. Ent. Soc, vol. 4, 1872, p. 178.? Opius hrunneiventris (Cresson) Provancher, Add. Faun. Can. Hym., 1888, p.382.Habitat.?Texas and ? Canada. ^Host.?Unknown. OPIUS CINCTUS Provancher.Opius cinctus Provancher, Add. Faun. Can. Hym., 1886, p. 124; 1888, p. 381.Habitat.?Canada.Host.?Unknown
.
OPIUS MANDIBULARIS, new species.Plate 34, figs. 4a, 46; plate 35, fig. 9.Female.?Length 2 mm. Head and thorax pohshed; head trans-verse, the face sparsely punctate with a median ridge; malar spaceless than the width of a mandible at base; clypeus with the anteriormargin slightly rounded, about two and one-half times as broad aslong down the middle and separated from the mandiblos br only a81022??Proc.N.M.vol.49?15 6
g2 I'h'OCEEDlNOS OF THE NATIONAL MUSEUM. vol. 4ii.rery narrow transverse opening, if at all; mandible with a distincttooth or notch on the ventral margin near the base; antennae 29-jointed in the type, inserted a little above the middle of the eyes, thefirst flagellar joint two and one-half times as long as thick; oceU-ocular line about 2^ times as long as the diameter of an ocellus;width of the posterior orbit about half that of the eye; mesoscutumwith the parapsidal grooves impressed anteriorly for a short distanceonly; mesopleural impression deep and slightly crenulate; propodeumrugose. Stigma of the forewing narrow, lanceolate, with the radiusarising distinctly before its middle; fii-st abscissa of radius equal toabout half the width of stigma; second abscissa more than one andone-half times the length of the first transverse cubitus. Abdomenovate, its first tergite about as long as broad at apex and fully twiceas broad at apex as at base; irregularly striate; following tergitessmooth; ovipositor hardly exserted. Head, thorax, and first abdom-inal tergite black; antennal flagellum black; scape, pedicel, clypeus,mandibles, palpi, legs including coxae, and the tegulae pale stramin-eous; second tergite concolorous with the legs, the following tergitesblackish or brownish; wings hyaline, the nervures and stigma darkbrown; apical one-third of the hind tibiae and their tarsi as well asthe apices of the middle and anterior tarsi brown.Male.?Differs from the female only in the usual sexual characters.Type-locality.?Washington, District of Columba.Type.?C&t. No. 19365, U.S.N.M.Nine specimens labeled "Ex. Agromyzid in leaves of Chrysanthe-mum, Sept. 7, 1913, Mary Faunce collector."OProS UTAHENSIS Gahan.Opius utaJiensis Gahan, Can. Ent., vol. 45, 1913, p. 145; .Toiirn. Agri. Research,U. S. Dept. of Agr., vol. 2, 1913, p. 29, pi. 5, fig. 2.Habitat.?Utah.Host.?Agromyza parvicomis.OProS AMPLUS Ashmead.Adelura ampla Ashmead, Bull. Colo. Biol. Assoc, vol. ]. 1890. p. 19.Habitat.?Colorado.Host.?Unknown. OPIUS BASINIGER Vlereck.Opms hasiniger Viereck, Trans. Ivans. Acad. Sci., vol. 19, 1905, p. 270.The type of this species is in the Snow collection and has not beenexamined.Hahitat.?Kansas.Host.?Unknown.
vu. 2005. THE BRACONID ^^VBFAMILY OPIINAE?GAIIAN. 80OPIUS FOERSTERI, new species.Plate 36, fig. 7.Opius melli-pes (Provancher) Ashmead, in Insect Life, vol. 3, p. 59.Female.?Length 2.75 mm. Head polished above, the face withsetigerous punctures and a distinct median elevation; clypeus trun-cate anteriorly, more than three times as broad as long down themiddle, with some large punctures; mandibles fitting close to theclypeus and with a distinct tooth on the ventral margin near thebase; malar space shorter than the width of a mandible at base;posterior orbit slightly narrower than the width of an eye and roundedoff behind; antennae broken but showdng at least thirty joints in thetype; thorax poHshed; parapsidal grooves effaced except for a shortdistance anteriorly; propodeum rugose; mesopleural impressionsmooth; wings hyaline; first radial abscissa short, the second muchlonger than the fii'st transverse cubitus; radial cell terminating abovethe extreme wing apex. First abdominal tergite sUghtly longerthan broad at apex and rugose; following tergites smooth; ovi-positor barely exserted. Black; clypeus, mandibles, palpi, scape,pedicel, tegulae, legs, and abdomen, except the first tergite, which isblack, pale testaceous; wing veins and stigma brownish testaceous.Male.?Similar in all respects to the female.Type-locality.?Kirkwood, Missouri.Type.?Co.t. No. 19366, U.S.N.M.The female is described from a specimen reared by Miss Murtfeldt,September 25, 1881, and supposedly parasitic on Eulia triferana{==Lophoderus incertana). Ashmead determined this parasite asOpius mellipes Provancher and recorded the rearing as cited above.The allotype is a specimen from the Ashmead collection, the originof which is unknown,OPIUS NIGROCASTANEUS Vlereck.Opius nigrocastaneus Viereck, Trans. Kans. Acad. Sci., vol. 19, 1905, p. 272.Type in the Snow collection. The species is unknown to the writer.Habitat.?Kansas
.
Host.?Unknown
.
OPIUS COLORADENSIS, new species.Female.?Length, about 3 mm. Head transverse, smooth, pol-ished; face with distinct sparse punctures and a prominent medianridge; clypeus coarsely punctate basally, truncate anteriorly, andabout four times as wide as long down the middle; mandibles withthe ventral margin complete, only slightly separated from the clypeusby a narrow transverse opening; malar space shorter than the widthof a mandible at base; posterior orbits about two-thirds the width
84 PROCEEDINOS OF THE NATIONAL MUSEUM. vol.49.
of the eyes; ocell-ocular line fully three tunes the greatest diameterof an ocellus; thorax smooth and pohshed; propodeum rugose;stigma of the forewing moderately broad and long; first abscissa ofradius about equal to half the width of stigma; second abscissa nearlytwice as long as the first transverse cubitus; recurrent nervureinterstitial or nearly so; first abdominal tergite rugoso-striate, broaderat apex than at base, without distinct sublateral carinao, but with asharp carina originating at each basal lateral angle and meeting onthe median line before the middle of the tergite; remaining tergitessmooth; ovipositor hardly extending beyond the apex of abdomen.Head and thorax black; scape, mandibles, tegulae, legs includingcoxae, and the venter and sides of abdomen bright reddish strami-neous; dorsum of abdomen reddish brown, the first tergite black;wings hyaline, the stigma yellowish, veins brownish.Type-locality.?Colorado Springs, Colorado.Type.?C&t. No. 19367, U.S.N.M.One specimen collected in August by E. S. Tucker at 5,915 feetelevation. OPIUS RUFOCINCTUS, new species.Allotypus rufodnctus Ashmead, MS. in Ent. News, vol 16, 1905, p. 297.Female.?Length 2.2 mm. Head strongly transverse; antennaebroken in the type, the first flagellar joint about three times as longas thick; head above impunctate, the frons and vertex distinctlyhairy laterally; face closely punctate and covered with long hairs;clypeus rounded on the anterior margin fitting close to the mandi-bles and scarcely twice as broad as long down the middle; ocell-ocularline about three times the diameter of an ocellus; posterior orbitsmuch narrower than the eye; malar space not equal to the width ofa mandible at base; mesoscutum faintly punctate and distinctlyhairy, the parapsidal grooves almost wholly effaced; mesopleuraesmooth except the impression which is ovate and crenulate; propo-deum rugose with a distinct median carina; forewing considerablylonger than the whole body, broad; radius arising from about thebasal one-third of stigma which is not broad; first abscissa of radiusshorter than half the width of stigma; second abscissa about oneand two-thirds times the first transverse cubitus; second cubital ceUnarrowed toward the apex; recurrent nervure joining the first cubitalcell about the length of the first abscissa of radius before the basalnervure; abdomen short, oval, not as long as the thorax, the apicalsegments retracted; first tergite striate, narrower at base than atapex, and a little longer than broad; following tergites smooth;ovipositor scarcely reaching beyond the apex of abdomen. Black;scape, pedicel, mandibles, except apices, palpi, clypeus, and all legsincluding coxae pale honey-yellow; flagellum brownish black; tipsof mandibles and tarsal claws brown; apical one-third of hind tibae
N... 2090. THE BRACONID SUBFAMILY OPJINAE?GAHAN. 85and their tarsi slightly fuscous; second abdominal tergite on basalhalf honey-yellow; ovipositor sheaths black.Type locality.?Algonquin, Illinois.Type.?Cat. No. 19368, U.S.N.M.One specimen. Ashmead's manuscript name is adopted.OPIUS APICALIS, new species.Plate 35, fig. 8.Female.?Length 2 mm. This species is exactly similar to theforegoing except in the following details : The propodeum is without amedian carina; the mesopleura above the crenate impression is notsmooth but faintly coriaceous; the first abdominal tergite is notblack but reddish and the apical segments are sometimes mostlyhoney-yellow hke the base of the second; antennae 33-jointed in thetype.Male.?Like the female except in the usual sexual characters.Type locality.?Colorado.Type.?Cat. No. 19369, U.S.N.M.Four specimens without further data. This may prove to be buta variety of rufocinctus. Ashmead's manuscript name is adopted.OPIUS TIBIALIS Ashmead.Adelura tibialis Ashmead, Can. Ent., vol. 25, 1893, p. 79.Male.?Head transverse poHshed, the face practically impunctate;eyes rather small, ovate, wider than the posterior orbits whichare slightly narrower above than below; clypeus small, the anteriormargin distinctly convex, about twice as broad as long, and separatedfrom the mandibles by a transverse opening; malar space apparentlyabout as long as the width of a mandible at base; first flagellar jointa trifle more than three times as long as thick; mesoscutum withouta median impression posteriorly, the parapsidal grooves faintlyindicated on the anterior half; mesopleural impression faintly crenu-late; propodeum nearly smooth; first tergite rugulose, wider at apexthan at base, and distinctly longer than wide; following tergitessmooth.Notes from the type. For additional details see. the originaldescription.Habitat?West Virginia.Host.?Unknown
.
OPIU^ LUTEICEPS Vlereck.Opius luteiceps Viereck, Trans. Kans. Acad. Sci., vol. 19, 1905, p. 271.The species has not been recognized. The original descriptionagrees well with provancheri but in that species there is a largefusiform median impression on the posterior half of the mesonotumwhich is apparently absent in luteiceps.HaMtat.?Kansas.Host.?Unknown.
86 I'llOCEBDIiyaS of tub XATIONAL ].!U8EUM. vol.49.OPIUS ABERRANS Vlereck.Opius aberrans Viereck, Trans. Kans. Acad. Sci., vol. 19, 1905, p. 271.The type of this species has not been examined. A specimen fromOnaga, Kansas, which agrees with the description is in the UnitedStates National Museum and the characters used in the table ofspecies are taken from this specimen.Hahitat.?Kansas.Host.?Unknown. OPIUS UNIFASCIATUS Ashmead.Opius unifasciatus Ashmead, Joimi. Linn. Soc. Zool., vol. 25, 1894, p. 135.Hahitat.?St. Vincent.Host.?Unknown. OPIUS MONTANUS Ashmead.Adelura montana Ashmead, Bull. Colo. Biol. Assoc, a^oI. 1, 1890, p. 19.This species apparently differs from dimidiatus only in the follow-ing details: The propodeum is smooth and the first tergite is notgranularly rugose but practically smooth; the legs and the first andsecond tergites are dark reddish instead of pale straw-colored; thesecond abscissa of radius is more than twice as long as the firsttransverse cubitus while in dimidiata it is distinctly less than twiceas long. Notes from the type.Hahitat.?Colorado.Host.?Unknown
.
OPIUS DIMIDIATUS Ashmead.Plate 35, fig. 11.Adelura dimidiata Ashmead, Proc. U. S. Nat. Mus., vol. 11, 1888, p. 647.Eutrichopsis agromyzae Viereck, Proc. U. S. Nat. Mus., vol. 42, 1912, p. 622.Opius (Eutrichopsis) agromyzae (Viereck) Gahan, Can. Ent., vol. 45, 1913, p. 148.Ashmead's type is identical in every respect with those of Viereck.The species is a common parasite of Agromyza jMsilla, and it is alto-gether likely that the "Dipterous larva in a stem of cabbage" givenby Ashmead as the host was this Agromyzid, as this fly has been rearedfrom cabbage leaves by the writer at College Park, Maryland. Thespecies can only be separated from aridus and hruneipes by thecharacters used in the key.Hahitat.?Maryland, Ohio, Indiana, South Dakota. Utah.OPIUS TANTILLUS Ashmead.Opius tantillv^ Ashmead, Trans. Ent. Soc. Lond.. 1900. p. 294.Habitat.?Grenada.Host.?Unknown. OPIUS INTERSTITIALIS Ashmead.Opius interstitialis AhkweAD. Joum. Linn. Soc. Lond. Zool.. vol. 25. 1894, p. 136.Hahitat.?St. Vincent.Host.?Unknown
NO. 20iir.. THE HRAVOMD Si] lU'AXJILY Ol'l ISAH ?UAHAS . 87OPinS mSULARIS Ashmead.Opms irmilaris Ashmead, Joum. Linn. Soc. Lond. Zool., vol. 25, 1894, p. 135.Habitat.?St. Vincent.Host.?Unknown. OPIUS EHRHORNI, new species.Female.?Length about 2 mm. Head transvei*se, polished, theface shining with faint setigerous punctures; clypeus fully three timesas broad as long down the middle, its anterior margin straight andseparated from the mandibles by a very narrow transverse opening;malar space very short, not equal to more than half the width of amandible at base; posterior orbits a little narrower than the width ofthe eyes ; ocell-ocular line at least three times as long as the diameterof an ocellus; mandibles with a distinct notch on the ventral marginnear the base; antennae inserted a little above the middle of the eyes,23-jointed, the first flagellar joint slightly more than twice as longas thick, following joints subequal and a little less than twice as longas thick; face with a median ridge; thorax polished; parapsidalgrooves absent except at the anterior lateral angles of the mesoscutum,the mesoscutum without a median impression; mesopleurae smooth,with a shallow smooth impression below the middle; propodeumrugose; stigma of the forewing moderately broad; first abscissa ofradius equal to about half the width of stigma, arising much beforethe middle of stigma; second radial abscissa nearly twice the lengthof the first cubital crossvein ; third abscissa about equal to the secondabscissa and the second cubital crossvein combined, attaining thewing margin far above the extreme wing-apex; recurrent nervurejoining the inner angle of the second cubital cell. Abdomen ovate,about as long as the thorax, its first tergite rugose, slightly longerthan broad and a little wider at apex that at base; following tergitessmooth; ovipositor very slightly exserted. General color black;mandibles, except apices, and the clypeus rugose; antennal scapepiceus, flagellum black; legs including all coxae reddish testaceous;wings hyaline, the veins and stigma pale brownish; tegulae testaceous
;
abdomen beyond the first tergite reddish testaceous, more or lessmixed with blackish.Type-locality.?Mountain View, California.Type.?C&t. No. 19370, U.S.N.M.Host.?Unknown.One specimen bearing the above locality label and a second labelas follows: "Ehrhorn, Lot 2."OPIUS COMMODUS, new species.Male.?^Length 1.5 to 1.75 mm. Head transverse, smooth; facepractically impunctate; malar space shorter than the width of man-dible; rather broad opening between mandibles and clypeus; poste-rior orbits rounded, about half the width of eye; ocell-ocular line
88 PROCEEDINGS OF THE NATIONAL MUi^EVM. voi. in.about three times as long as the diameter of an ocellus; antennae27-jointed in the type, the first flagellar joint more than three timesas long as thick; antennae inserted above the middle of the eyes.Thorax smooth, the parapsidal grooves very short; propodeumsmooth, polished; stigma of the forewing moderately broad, theradius arising before its middle; second abscissa of radius one-thirdlonsrer than the first transverse cubitus ; third abscissa of radius twiceas long as the second and attaining the wing margin very slightlyabove the extreme wing apex; recurrent nervure joining the secondcubital cell. First abdominal tergite rugose, following tergitessmooth. Body color reddish stramineous; eyes black; flagellumblackish; wing veins and stigma brownish.Type-locality.?St. Vincent Island, West Indies.Type.?C&t. No. 19371, U.S.N.M.Six male specimens collected by H. H. Smith. The species is likeinterstiiialis Ashmead except for the smooth propodeum, non-foveolated mesopleural impression and the noninterstitial recurrentnervure. OPIUS DIASTATAE Ashmead.Bracon diastatae Ashmead, Proc. U. S. Nat. Mus., 1888, vol. 11, p. 617.Opius diastatae (Ashmead) Gahan, Can. Ent., vol. 45, 1913, p. 150?(Ashmead) 1Phillips, Joiim. Agri. Res. U. S. Dept. Agri., vol. 2, p. 29, pi. 4, fig. 2. ^Habitat.?Florida, Alabama, and Indiana.Host.?Agromyza parvicomis. IOPIUS BRUNEIPES Gahan.Opius bnmeipes Gahan, Can. Ent., vol. 45, 1913, p. 148.HaMtat.?Florida and Maryland.Host.?Agr&my^.a pusilla.OPIUS ARIDIS Gahan.Opius aridis Gahan, Can. Ent., vol. 45, 1913, p. 147.Habitat?Arizona
.
Host.?Agromyza pusilla.OPIUS SALVIKI Ashmead.Opius salvini Ashmead, Journ. Linn. Soc. Lend. Zool., vol. 25, 1894, p. 134.Habitat.?St. Vincent.Host.?Unknown. OPIUS MELANOCEPHALUS Ashmead.Opius melanocephalus Ashmead, Journ. Linn. Soc. Lond. Zool., vol. 25. 1894,p. 134.Habitat.?St. Vincent.Host.?Unknown.
NO. 20G5. THE BRACONID SUBFAMILY OPIJNAE?GAHAN. 89OPIUS STRIATIVENTRIS, new species.Plate 35, fig. 12.Female.?Length 1.5 mm. Head strongly transverse and polished,the face practically impimctate and with only a very slight medianridge ; malar space hardly half as long as the width of a mandible atbase; clypeus about twice as broad as long down the middle; eyeslarge and converging slightly below; a broad opening between man-dibles and clypeus, the former small and just crossing at the tips;oceU-ocular line equal to about twice the diameter of an ocellus;posterior orbits receding and about half as wide as the eyes ; antennae22-jointed in the type, the first flagellar joint about four times as longas thick. Thorax distinctly broader between the wings than high(dorso-ventraUy), the mesonotum flattened, smooth, the parapsidalgrooves indicated only anteriorly; mesopleurae smooth with animpression below which is faintly rugulose within ; propodeum granu-larly rugose; stigma of the forewing lanceolate, emitting the radiusnear the basal one-third; first abscissa of radius shorter than thewidth of stigma, second abscissa about one and one-half times thefirst transverse cubitus, third abscissa fully two and one-half timesthe second and attaining the wing margin very slightly above theextreme wing apex. First abdominal tergite granularly rugulose, alittle longer than broad and wider at apex than at base; second andthird tergites granularly rugulose, the suturiform articulation deepand distinct except toward the lateral margins; fourth tergite finelystriate; following tergites smooth; ovipositor projecting only slightlybeyond the apex of abdomen. General color reddish stramineous;eyes black; spot surrounded by the ocelU, mesoscutum, and scutellumpiceus; antennal flagellum dark brown; hind tibiae and their tarsifuscous; wings hyaline, the stigma and veins brownish.Male.?Antennae 23-jointed in the type. Otherwise as in thefemale.Type-locality.?United States.Type.?C&t. No. 19372, U.S.N.M.One female and two male specimens in the National Museum fromthe Ashmead collection. The origin of these specimens is imknown.OPIUS SUTURALIS Gahan.Opius suturalis Gahan, Can. Ent., vol. 45, 1913, p. 146.Since the original description of this species which was from a male,a female has been received from Holtville, California, bred by V. L.Wildermuth under Webster No. 6158. This female agrees with thedescription of the male except that the rugulose sculpture on thesecond tergite extends almost to the apex of the segment. The ovi-positor scarcely extends beyond the apex of the abdomen.Hahitat.?Arizona and California.Host.?Agromysa pusilla.
90 PROCEEDINOH OF THE NATIONAL MUSEUM. vol.49.OPIUS GRACILLARIAE, new species.Bracon gracillanae Ashmead, MS, Insect Life, vol. 2, 1890, p. 349.Female.?Length 1.3 mm. Head transverse, smooth and pohshed,the face nearly smooth and without a distinct median ridge; clypeusabout twice as broad as long and separated from the mandibles by anelliptical opening; posterior orbits about half the width of the eyesand receding; malar space shorter than the width of a mandible atbase; antennae broken, inserted slightly above the middle of the eyes,the first flagellar joint nearly four times as long as thick; mesoscutumsmooth, the parapsidal grooves absent except at the anterior angles,
^A^ithout a median impression; mesopleurae smooth, the impressionbelow the middle faintly crenulate; propodeum rugose; wing-stigmamoderately narrow, emitting the radius at the basal one-third; firstradial abscissa about half as long as the width of stigma; secondabscissa about twice the length of the first cubital crossvein; thirdabscissa twice the length of the combined first and second abscissae,sHghtly curved into the radial cell and attaining the wing margin onlya trifle above the extreme wing-apex. First, second, and third abdom-inal tergites granularly rugulose, the suturiform articulation dis-tinct ; second tergite longer than the third ; following tergites smooth
;
ovipositor barely exserted. Head and thorax piceus; mandibles,palpi, scape, clypeus, legs including coxae, tegulae, metapleurae,most of the propodeum, and the first and second abdominal tergitespale stramineous; antenna! flagellum dark brown, the basal jointsslightly paler; apex of abdomen blackish; wings hyaline, the veinsand stigma brownish yellow.Type-locality.?Kirkwood, Missouri.Type.?Cat. No. 19373, U.S.N.M.Described from one specimen. The reference above cited statesthat the specimen was reared by Miss Murtfeldt from Gradllaria des-modieUa. This record needs to be verified.OPIUS NANUS Provancher.Opius nanus Provancher, Add. Faun. Can. Hym., 1888, p. 382.The type of this species is from California and is very similar tograciUariae but may be distinguished by the characters used in thekey.Habitat.?California.Host.?Unknown. OPIUS OSCINIDIS Ashmead.Plate 35, fig. 10.Rhyssalus osdnidis Ashmead, Proc. U. S. Nat. Mua., 1888, vol. 11, p. 630.Eutrichopsis osdnidis (Ashmead) Viereck, Proc. U. S. Nat. Mus., vol. 44, 1913,p. 559.Habitat.?District of Columbia and Indiana.Host.?Dipterous leaf miner in Plantago.
-n. 2095. THE BliAVONID SUBFAMJLY OPIINAE?GAUAN. 91OPIUS AMERICANUS, new species.Male.?Length 2 mm. Head transverse, smooth, the face with amedian ridge and nearly impunctate; clypeus about twice as broadas long, slightly rounded on the anterior margin and fitting close tothe mandibles ; mandibles with a distinct tooth on the ventral marginnear the base; malar space a little shorter than the width of a man-dible at base; eyes wider than the posterior orbits which are onlysUghtly receding; ocellocular line about equal to twice the diameterof an ocellus; antennae inserted above the middle of the eyes, 27-jointed, the first flagellar joint nearly four times as long as thick.Thorax smooth; mesoscutum nearly devoid of pubescence, the parap-sidal grooves absent except at the anterior angles where they aredeeply impressed, median impression absent; mesopleurae smooth,with a smooth impression below the middle; propodeum rugose withan indication of a median carina basally; wings hyaline; the stigmalanceolate, emitting the radius distinctly before the middle; firstradial abscissa equal to about half the width of stigma; secondabscissa twice as long as the first transverse cubitus; thirdabscissa about one and one-half times the combuied length of thefirst and second abscissae; recurrent nervure joining the secondcubital cell; abdomen not longer than the thorax, ovate; first ter-gite rugose, considerably longer than wide at apex, and wider at apexthan at base; suturiform articulation distinct, the surface before thefold, except a narrow lateral margin, rugose; beyond the fold tothe apex of abdomen smooth and polished. General color black;scape, pedicel, mandibles, except at apex, palpi, tegulae, and legs,including all coxae, pale stramineous; face with a faint castaneoustinge; antennal flagellum brownish-black; wing veins and stigmabrown, the veins at base of wmg stramineous.Type.?C&t. No. 19374, U.S.I^.M.Described from a single specimen in the United States NationalMuseum bearing Illinois accession number 17216. Mr. C. A. Hartinforms me that this number refers to the following data: Collectedby C. A. Hart while ascending a lonely road through a forest leadingup Bald Knob, one of the Ozark hills in southern Illinois.NORTH AMERICAN SPECIES UNKNOWN TO THE WRITER.OPITTS ATRICEPS Aslimead.Opius atriceps Ashmead, Journ. Linn. Soc. Lond. Zool., vol. 25, 1894, p. 136.The paratype specimen of this species in the United States NationalMuseum, is imperfect, the wings having been lost. It appears to be aMicrohracon. Owing to the doubtful identity of this specimen and
92 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 49.the further fact that the type may be a different 8pecie3 the statusof this species must remain in doubt until the type can be examined.Habitat.?St. Vincent.Host.?Unknown. OPIUS GRENADENSIS Ashmead.Opitis grenudensis Ashmead, Trans. Ent. Soc. Lond., 1900, p. 294.Apparently not represented in the United States National Museum,Habitat.?Grenada
.
Host.?Unknown
.
OPIUS FORTICORNIS Cameron.Opius forticornis Cameron, Invert. Pacif., vol. 1, 1904, p. 51.Habitat.?Nicaragua.Host.?Unknown. OPIUS IRRIDIPENNIS Cameron.Opius imdipennis Cameron, Invert. Pacif., vol. 1, 1904, p. 51.Habitat.?Nicaragua.Host.?Unknown.SPECIES WRONGLY CLASSIFIED AS OPIINAE.The followmg species, described as Opiines, have been found tobelong in other groups.Family BRACONIDAE.Subfaixiily RtlOG^^DHSTAK.ONCOPHANES ATRICAUDUS Ashmead.Gnamptodon atricaudus Ashmead, Journ. Linn. Soc. Lond. Zool., vol. 25, 1894.p. 133.As represented by the paratype in the United States NationalMuseum, this species is not an Opiinae. It runs to the genus Onco-phanes in Szepligeti's classification of the Braconidae.SribfaTxiily EXOTHECHsT^E.PHANOMERIS MELLIPES Provancher.Opius pallipes Provancher, Natur. Canad., vol. 12, 1880, p. 164; vol. 15, 1883,p. 16; Faun, entom. Canad. Hymen., 1883, pp. 511 and 804, fig. 55.Opius mellipes Provancher, Add. Faun. Canad. Hymen., 1886, p. 123; 188S,p. 381.This species apparently resembles P. dimidiatus Nees as describedby Marshall.' The first abdominal tergite is without a distinctmedian longitudinal carina and the ovipositor is apparently longerthan in dimidiatus. No other representatives of the genus Phano-meris are recorded from North America so far as known.
Pppp. nymenop. Eur., vol. 4. ISSS, p. 174. pi. 7, flg. 2.
.so. 2095. THE BRACOXID SUBFAMi f.Y OPIINAE?GAHAN. 93Sul>faraily BR^C03Sri3Sr.A.E.MICROBRACON DORSATOR Say.Opitts wm6i7ts Provancher, Add. Faun. Canad. Hymen., 1888, p. 382.MICROBRACON CANADENSIS Ashmead.Opius canadensis Ashmead, Can. Ent., vol. 23, 1891, p. 4.MICROBRACON REJECTUS Ashmead.Opius rejectus Ashmead, Journ. Linn. Soc. Lond. Zool., vol. 25, 1894, p. 136.The original description of this species states that the antennaeof the female are 27-jointed and those of the male 21-jointed. Themales of Opiinae usually have more joints in the antennae than thefemales or at least as many. The number of joints is variable inboth sexes but rarely if ever to the extent indicated, at least inspecies havmg less than thirty joints. It seems certain that Ashmeadhas confused two species in this description. The male type in theUnited States National Museum is not an Opiinae but a Microbracon.The female is in London and may be an Opius. Since the malesymbol is placed before that of the female in the original description,the writer has chosen the male specimen as the type of the speciesand transferred the name rejectus to Microbracon,. In the UnitedStates National Museum are specimens of an Opius agreeing withAshmead's description and these have been described in the fore-going pages under the name of Opius commodus. The specimen inthe British Museum possibly should be referred to this species.MICROBRACON NIGER Provancher.Opius niger Provancher, Add. Faun. Canad. Hymen, 1888, p. 381.This species seems not to be referable to any of the known speciesof Microhracon. The following descriptive notes are from the type,a female, and will supplement Provancher's description : Head abovesmooth, pohshed; face very finely punctate with a sharp medianridge from just below the antennae to the cljqjeus; triangular areabefore the ocelli and above the antennae very finely punctate; firstjoint of the flageUum about as long as the scape; thorax smooth andpolished, the parapsidal grooves complete but not deeply impressed;propodeum mostly smooth and pohshed with a very short medianlongitudinal cariaa at the apex, the apical third of the propodeummore or less aciculate-punctate, the aciculations most pronouncedeach side of the carina; abdomen with the tergites irregularlywrinkled and shining, the ovipositor exserted about the length of theabdomen.
04 rROCEIWINGS OF THE NATIONAL MUSEUM. vol.49.ALLOBRACON, new genus.Plate 34, figs. 5a, 5b.Head transverse, smooth; eyes very large, protruding, very slightlyemarginate opposite the antennae, the fascets rather coarse andelevated; malar space distinct, a little shorter than the width of amandible at base; face about as wide as the transverse diameter ofan eye; posterior orbits very narrow, rounded; ocell-ocular linehardly twice the greatest diameter of an ocellus; antennae slender,26-jointed, the joints of flagellum subequal or shortening very slightlytoward the apex and about three times as long as thick ; pedicel aboutequal to the scape; parapsidal grooves nearly effaced, mesonotumfaintly rugulose, scutellum smooth ; mesopleurae smooth ; propodeumsmooth, with a distinct median carina and not sloping posteriorly, itsapex nearly on a level with its base; wings hyaline, the stigmamoderately broad, the radius originating before the middle of stigma:first abscissa of radius nearly equal to the width of stigma, secondabscissa a little longer than the first transverse cubitus; recurrentnervure interstitial; median crossvein a trifle beyond the basalnervure; abdomen a little longer than the thorax, lanceolate, itsfirst tergite twice as wide at apex as at base, rugulose but with asemicircular, slightly depressed, flattened, smooth area at apex whichis bounded by a faint carinate hne from one posterior lateral angle tothe other; following tergites faintly wrinkled; ovipositor about half aslong as the abdomen. Legs long and slender, the basal joint ofposterior tarsi as long as the four following joints together.This genus is apparently related to Megalomum Szeplegeti, butdiffers in having a distinct malar space. From Curriea Ashmead itdiffers in the less emarginate eyes, longer malar space, peculiar firsttergite, and the immaculate wings.Type of the genus.?Diachasmxi pilosipes Ashmead.^Subfamily ICII]SrE!XJTITsrA.E;.ICHNEUTES BICARINATUS Ashmead.Opius bicarinatus Ashmead, Can. Ent., vol. 23, 1891, p. 4.
' Joura. Linn. Soc. Lond. Zool., vol. 25, 1894, p. 137.
NO. 2095. TUB BEAdo's!ID HURFAMILY OPIINAE?GAHAN. 95EXPLANATION OF PLATES.The drawings on Plate 34 are by Mr. W. R. Walton of the Bureau of Entomology.The wing figures on Plate 35 are from photographs by the writer. These photographsare not all on exactly the same scale. They are intended primarily to illustratedifferences in wing venation. Plate 34.Fig. 1. Gnamptodon nepticulae. Dorsal view of the abdomen.2. Opius vierecki. Front view of the head.3. Opius crassiceps. View of the head from above.4. Opius mandihularis . (a) Front view of the head. (6) Left mandible.5. Allobracon pilosipes. (a) Front view of the head. (6) Dorsal view of the firstabdominal segment. Plate 35.
. Fig. 1. Opius sanguineus, (a) Anterior wing, (b) Posterior wing.2. Opius crassiceps. Anterior wing.3. Opius foveolatus. Anterior wing.4. Opius anastrephae. Anterior wing.5. Opius politus. Anterior wing.6. Opius anthomyiae. Anterior wing.7. Opius foersteri. Anterior wins;.fo ngOpius apicalis. Anterior wing9. Opius mandihularis. Anterior wing.10. Opius oscinidis. Anterior wing.11. Opius dimidiatus. Anterior wing.12. Opius striativentris . Anterior wing.13. Gnamptodon nepticulae. Anterior wing.
?

U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 49 PL. 34
Details of Braconidae of the Subfamily Opiinae.For explanation of plate see page 95.

U. S. NATIONAL MUSEUM PROCEEDINGS, VOL. 49 PL. 35
Wings of the Braconidae of the subfamily Opiinae.For explanation of plate see page 95.