DESCRIPTIONS OF TWENTY-FIVE NEW SPECIES OF NORTHAMERICAN HYMENOPTERA.
By S. A. RonwER,Of the Bureau of Entomology, United States Department of Agriculture.
The following pages contain the descriptions of 25 new spe-cies of Hymenoptera which have been submitted for identifica-tion. The types of all the species are in the United States NationalMuseum. Superfamily MEGALODONTOIDEA.Family MEGALODONTIDAE.ITYCORSIA ZAPPEI, new species.Of the North American species, this new species is probably m.ostclosely allied to maculiventris (Norton), but the male differs in anumber of ways from the description given for that species, and thedescription of the female given by MacGillivray does not agree in alldetails with the female of the species described here. In MacGilli-vray's key to the species of Itycorsia of Connecticut (Bull. 22, Conn.Geol. and Nat. Hist. Survey, p. 33) this species runs to couplet 6, butdiffers from both luteomaculata (Cresson) and alhomaculata (Cresson)in the black cypeus and other minor characters. Of the Europeanspecies it seems to be more closely allied to stellata, but differs fromthe descriptions of that species in the color of both adult and larva.Female.?Length 13 mm. Anterior margin of the clypeus trun-cate; medianly the clypeus is strongly raised by the extension of theantennal carina; its surface is shining, impuncate; median fovea deep,elongate; area above the frontal crest with rather close, small punc-tures; median ocellus in a diamond-shaped depression; posteriorocellus bordered laterad and caudad by a deep furrow; posterior orbitsand vertex shinmg, with large widely separated punctures, frontalcrest obsolete; antennae 31-jointed, the third joint slightly longerthan the fourth and fifth combined; prescutum shining, practicallyimpunctate ; scutum shining, with a median area of close, large punc-tures; scutellum shining, practically impunctate; mesepisternumsubopaque, with sparse, rather large, setigerous punctures. Black;Proceedings U. S. National Museum, Vol. 57?No. 2312.144.882?20?Proc.N.M.Yol..57 14 209
210 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57.spot on the mandibles at base, spot on the superior orbits, two spotson the vortex, spot on the occiput behind the eye, and with a line-like projection toward the supraorbital spot, the posterior margin ofthe pronotum, tegulae, two spots near the posterior margm of tiieprescutum, two spots along the notauli on the scutum, two large spotson the scutum posteriorly, a small spot on the lower posterior orbits,an elongate spot on the mesepistcrnum dorsally, circular spot on thesides of the pronotum, most of the metepisternum, dorsal and ventralmargins of tergites, the apical margin of the sternites 3, 4, 5, and 6,yellowisli-wUte; legs l)lack; the tibiae and basal joints of the anteriortarsi rufous; wings hyaline basally, fuligmous beyond the basal mar-gin of the stigma; venation dark brown,Paratype females show tliat this species may vary as follows: thespot on the metepisternum may be greatly reduced; the line pro-jecting toward the supraorbital spot may be complete or entirelyabsent; the yellov^^ spot on the lower margin of the posterior orbits isusually wanting.Male.?^Length 8.5 mm. In puncturation and characters of thehead, the male agrees with the above description of the female, ex-cept the declivous face is a little more sharply defined on the frontalcrest, however the frontal crest is rounded and not margined; anten-nae 31-jointed; the third jomt slightly longer than the fourth andfifth; hjq^opygidium broadly rounded apicaliy. Black and yellow;antennae yellowish-ferruginous, apical half brownish; scape aboveblack; head black; mandibles except apices, clypeus except twopoints medianly, lateral supraclypeal area, area between the antennaeand extending caudad in two lines to the level of the anterior ocellus,the lateral orbits near the top of the eye where they narrow and ex-tend almost to the middle of the occiput, supraorbital spot, connectedwith the line extending posteriorly to meet the line of the occiput,two spots on the vertex, yellow; thorax black, the posterior dorsalmargins of the pronotum, tegulae, most of the prescutum, two spotson the scutum anteriorly, spots on the scutum posteriorly, the scu-tellum, most of the metepisternum, sternum, metepimerun, and epis-ternum, yellow; sternites, and tergites ventrally, and the lateral mar-gin of the tergites dorsally yellow; the rest of the tergites black; legsyellow with the base of the coxae posteriorly, line of the femora andtrochanters posteriorly black; wings hyaline; venation dark brown;costa and also margin of the stigma yellowish.Type locality.?New Haven, Connecticut. Described from eight fe-males and two males collected byM. P. Zappeforwhom the species isnamed. The type female was collected as a larva August 2, 1916, onAustrian pine and emerged June 7, 1917. It is recorded under No.670 Connecticut Agricultural Experiment Station. The type maleand the paratype male were collected as larvae on August 2, 1916, on
No. 2312. NEW NORTH AMERICAN UYMENOPTERA?ROHWER. 211White pine, and emerged June 26, 1917, and are recorded under No.669 Connecticut Agricultural Experiment Station. The other fe-males were collected in June and July, 1915.Type, Allotype, and four female Paratypes.?Cat. No. 21605,U.S.N.M.Three female paratypes and the male paratype returned to theConnecticut Agricultural Experiment Station.Superfamily TENTHREDINOIDEA.Family ARGIDAE.ARGE MOCSARYI, new name.Arge apicalis Mocsary, Anal. Miis. Nat. Hung., vol. 7, 1909, p. 6; not {Eylo-loma) Arge apicalis Kirby, 1894.Family TENTHREDINIDAE.PERICLISTA PLESIA, new species.This species is very close to carycola (Dyar), but the sheath isobliquely truncate and then broadly rounded to the base; the clypeushas a broad subangulate emargination and the fourth antennal jointis subequal in length to the fifth.Female.?Length 5.5 mm. Clypeus broadly subangulately emar-ginate, the lobes broad and rounded on the lateral margins; suprac-lypeal area gently convex, shining; middle fovea circular in outline,deep v/ith sloping v/alls; frontal foveae small, elongate; ocellar basinreduced to a triangular depression around the anterior ocellus fromwhich it projects posteriorly to the postocellar furrow; antennalfurrows obsolete between the frontal foveae and the postocellar fur-row ; postocellar furrovf well defined ; postocellar area convex, faintlyimpressed medianly, well defined laterally; third antennal joint alittle shorter than the fourth and fifth joints; the fourth and fifthjoints subequal; vertex and mesepisternum shining; stigma threetimes as long as its greatest width, obliquely truncate apically ; petioleof the anellan cell rather long; sheath straight above, pointed at thetip, oblicj[uely truncate and then rounded to the base. Black ; clypeus,labrum, margin of the pronotum, and tegulae, yellowish-white;margin of the prescutum, posterior margin of the scutum, scutellum,anterior part of the pronotum, upper haK of the mesepisternum, allof the legs except the extreme bases of the coxae, sternites exceptthe middle of the five basal (narrow on the first to broader on thefifth) rufo-ferruginous ; wings hyaline, venation brown, costa andstigma whitish.Type locality.?Portland, Connecticut. Described from the fe-male collected on v^'hite pine on May 15, 1914, by B. H. Walden.Type.?C&t. No. 21697, U.S.N.M.
212 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57.
PEailCUSTA PECANIVOKA, new species.Allied to Periclista Mcoriae Rohwer but may easily be distin-guished by the polished practically impunctate scutum and scutel-lum (in Mcoriae with uniform, separated punctures), and by theventral tooth of the mandibles being long and acute (in Mcoriaescarcely exceeding upper, blunt and rounded).Female.?Length 5.5 mm. Mandibles with the lower tooth longand pointed, much exceeding the upper; clypeus with large puncturesbasally, apicaUy depressed, the apical margin with a shallow arcutemedian emargination, lobes broad, rounded apicaUy; supraclj^pealarea not strongly convex, triangular in outline; median fovea oval,deep, with a shallow furrow extending dorsaUy; antennal furrowsshallow, broad; depression around anterior ocellus sharply definedabove, open below, triangular in outline; postocellar furrov/ straight,sharply defined; vertical furrows sharply defined anteriorly, obsoleteposteriorly; postocellar area convex; postocellar line somewhat longerthan oceUocular line; fom-th and fifth antennal joints subequal;front with medium size, rather close, setiguous punctures; vertexand temples polished but with a few rather small punctures; entiremesonotum polished, with only a few punctures along the marginsof sclerties; mesepisternum polished with only small setiguous junc-tures; stigma nearly four times as long as greatest width; gradujillytapering from l)ase to interradius then sharply oblique; the apicallower abscissa nearly half as long as interradius; interradius veryslightly before middle of third cubital; anellan cell sessile; sheathstraight above but with apical angle curved upward so there is anarrow projection, from projection gradually rounding to base.Black; apical part of clypeus, labrum, palpi, spot on mandiblesbasally, angles of pronotum and tegulae whitish; upper half of mese-pisternum, margins of prescutum, posterior margin of scutum, aspot on scuteUum ferrugineous; abdomen except first tergite(margins of tergites slightly infuscated), and legs except posteriorcoxae, yellowish ferrugineous; wings hyaline; venation dark brown,costa and stigma yellov/ish.Type locality.?San Saba, Texas. Described from two femalesreceived from Bureau of Etomology under Quaintance number16703 and bearing host label "Pecan". Collected April 20, 1918,by A. I. Fabis.Type.?C&t No. 22203 U.S.N.M.PTERONIDEA MELANOSTOMA, new species.This species runs in Marlatt's key to iMcljicus (Marlatt), but thatspecies has, according to the description, a deep, oval middle foveaand has the characters of the head and the color of the femora differ-ent. Although the shape of the sheath suggests species of Pontania
No. 2312. NEW NORTH AMERICAN HYMENOFTERA?ROHWER. 213the habitus, characters of the head, and antennae are tjr^iical of thegenus Pteronidea.Female.?Length 5 mm. Robust; shining. Clypeus gently con-vex, the anterior margin shallowly, arcuately emarginate, the lobesbroad and rounded apically; supraclypeal foveae deep, punctiform^not connected with the antennal foveae; supraclypeal area uniform^convex, not sharply defined dorsally but tapeziodal in outline; medianfovea shallow, circular in outline; frontal crest broken by an elongateshallow depression which appears as an interrupted extension of themiddle fovea; ocellar basin short, sharply defined, shining, trape-zoidal in outhne; antennal furrows well defined dorsally; postocellarline subequal with the ocellocular line; postocellar area sharply definedanteriorly by the distinct angulate postocellar furrow; a distuict fur-row from the anterior ocellus to the postocellar furrow, posterior orbit?*full, straight; antennae rather short, distinctly tapering, the thirdjoint a trifle shorter than the fourth; inner tooth of the claw shorterthan the outer; stigma long, narrow, sharply tapering, fully fourtimes as long as its greatest v/idth; reciu-rentella distinctly post-fureal; sheath broad, straight above, truncate apically, the trunca-tion slightly emarginate, oblique to a broad base. Black; sides ofthe nates ferruginous; legs black; trochanters, apices of the femora,ail of the tibiae and tarsi, yellowish-ferruginous; wings hyaline,venation dark brown, costa and stigma j^^ellow; head and thoraxwith short white hair.Type locality.?St. George Island, Bering Sea. Described fromone female collected by G. Be Has Hanna, June 14, 1914, and re-corded under his lot No. 12.Type.~Cat. No. 21644, U.S.N.M.PTERONroEA ALNIVOEA, new species.This species is closely allied to Pteronidea corylus (Cresson) but the'scape and the supracl3^peal area are black, the middle fovea is broaderand more rounded, the lower margins of the lancets have small sharpteeth.Female.?^Length 6 mm.; length of the antennae 4.5 mm. Ante-rior margin of the clypeus deeply arcuately emarginate, the lobesobtusely rounded, distinctly narrower than the emargination; supra-clypeal area uniformly convex, triangular in outline; supraclypealfoveae deep, elongate, confluent with the antennal foveae; middlefoveae broad, U-shaped in outline, walls sloping; frontal crest veryprominent, broken; ocellar basin hexagonal in outline, open abovewith the lateral and lower walls high but sloping; postocellar areaconvex, parted, well defined laterally but only incompletely definedanteriorly; antennae distinctly tapering, the third joint a trifle longerthan the fourth; head and thorax shining; stigma short, rounded
214 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57.below, broadest at about the middle, its length about two and one-sixth times as great as greatest width; third cubital one-fifth widerapically; the second recurrent received one-half the length of thesecond intercubitus from the apex of the cell; sheath straight above,rounded apically, tapering to a broader base. Black; labrmn, anglesof the pronotum, tegulae, whitish; abdomen beyond the basal platesrufous; sheath black; legs rufo-ferruginous; the bases of all the tibiae,and the four anterior basitarsis whitish; apices, hind femora, apicaltvro-thirds of hind tibiae, and all of the hind tarsi black; wmgs hya-line, iridescent, venation brown.Male.?^Length 5 mm. The structural characters of the headagree very well with those of the female; third antennal joint isdistmctly shorter than the fourth; stigma as in the female; thii'dcubital cell but little longer than its apical width; hypopygidiumsubtruncate apically, the sides oblique; procentia projecting bynearly its apical width, truncate. Black; labrum, angles of thepronotum, and tegulae whitish; legs rufo-ferruginous; apices of allthe tibiae whitish; the extreme apex of the posterior femora, apicaltv.o-thu'ds of the posterior tibiae, and all of the posterior tarsi,blackish; wings hyaline, venation brov\^n.Type locality.?^^^ebb Pond, Maine. Described from eleven females(one, ty|3e) and two males (one, allotype) reared from larvae collectedSeptember 5, 1894, feeding on Alder. Material collected and rearedby H. G. Dyar and recorded under his No. 4Q.Type.?Csit. No. 21794, U.S.N.M.PTERONIDEA MENDICANA, new species.This species is closely allied to mendicus,hut is readily separatedby the large size and the different conformation of the head.Female.?^Length 6 mm.; length of the antennae 4.5 mm.; robust.Clypeus deeply, subsquarely emarginate, the width of the emargi-nation much less than the lobes; lobes broadly rounded; supraclypealfoveae punctiform, not confluent with the antennal foveae; supra-clypeal area convex, broadly triangular in outline; middle foveaelongate, deeper below, and givmg the appearance of beingcircular; frontal crest indistinctly broken; ocellar basin poorlydefined, pentagonal in outline; postocellar area not arched, sharplydefined on all sides, straight antcriorl}"; postocellar line subequalwith the ocellocular line; antennae slender, tapering, the thu'd andfourth joints subequal; head and thorax shining; stigma broader atbase, sharply tapering to the apex, the greatest width two and one-third times the length; third cubital distinctly longer than its apicalwidth; second recurrent one-half the length of the second intercu-bitus from the end of the cell; sheath straight above, broad, obliquelytruncate apically, gradually tapering below. Yellowish-ferruginous;
No. 2312. NEW NORTH AMERICAN HYMENOPTERA?ROHWER. 215antennae, spot inclosing the ocelli, one on the postocellar area, spotson the prescutum, scutum, apex of the scutellum, posterior marginof the scutum, mctathorax mcdianly, all of the tergites medianly,black; legs yellowish; hind tarsi dusky; hind tibiae ferruginous; thecolor on the ventral part of the body is distinctly paler than on thedorsal part; wings hyaline; costa and stigma pale brown, remainingvenation dark brown.Type locality.?^Harrisburg, Pennsylvania. Described from fourfemales (one type) reared from larvae collected on Salix and recordedunder Bureau of Entomology No. Hopk. U.S. 11398r. Material col-lected by A, B. Champlam and reared by William Middleton.Type.?Csit. No. 21795, U.S.N.M.PTERONIDEA AMELANCHIERIDIS, new species.This species belongs in with militaris (Cresson) and thoracica(Harrington) but is readily separated from both of these by theblack venter. Marlatt confused more than one species both underthe name of militaris and thoracica. The species from Amelanchierdetermined as thoracica, however, seems to be correct.Female.?^Length 5 mm.; length of antennae 4.5 mm. Kobust.Anterior margin of the clypeus deeply, arcuately emargmate, thelobes narrow and sharply triangular; supraclypeal foveae deep, con-nected with the antennal foveae; supraclypeal area strongly convex;middle fovea elongate, breaking through the crest; ocellar basin pent-agonal, walls roimded; a distmct longitudinal groove extendmg belowthe anterior ocellus; postocellar area fiat, sharply defined on all sides;postocellar furrow angulate anteriorly; postocellar line a trifle longerthan the ocellocular line; head shining; third antennal joint slightlyshorter than the fourth; antennae only gently tapering; thoraxshining; stigma rounded below, about four times as long as the great-est width; third cubital rectangular in outline, about one half timesas long as broad; second recurrent the length of the second intercu-bitus before the end of the cell; sheath straight above, acute at theapex, sharply oblique to the broad base. Black; angles of the pro-notum, mesepisternum, sternum, metasternum, spots on the side ofthe scutum, and legs to the apices of the femora, rufous; the fouranterior tibiae and tarsi, the basal haK of the posterior tibiae, white;apical half of the posterior tibiae and all of the hind tarsi, black;wings hyaline, venation dark brown.Paratypes indicate that the rufous marks on the scutum may beentirely wanting, and the apical joints of the anterior tarsi may beblack.Type locality.?East River, Connecticut. Described from threefemales (one, type) reared from larvae collected by Charles R. Ely,feeding on Amelanchier caTuidensis, and recorded under Bureau of
216 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57.Entomology, No. Hopk. U. S. 13649 e^ Material reared by William]Middleton.Type.?Cat. No. 3485, U.S.N.M.PTEKONEDEA PLESU. new species.This species is closely allied to Pteronidea salicis-odorata (Dyar),but the stigma is shorter and distinctly angulate near the base andthe emargination of the clypeus is U-shaped and not V-shaped.Female.?Length 6 mm.; length of the antennae 4.5 mm. Robust.Anterior margin of the clypeus deeply emargmate, the emarginationU-shaped, the lobes broad, rounded apically; supraclypeal area tri-angular in outline, gently convex; supraclypeal foveae punctiform,confluent with the antennal foveae ; middle fovea elongate and break-ing through the crest by a short narrow channel; frontal crest faintlybroken; ocellar basin pentagonal, closed above, the walls well defined;postocellar furrow nearly obsolete; postocellar area broad; posto-cellar line subequal with the ocellocular Ime; head, seen from theside, with the anterior margm arched, not angular, antennae di-stinctly tapering, the third joint a trifle shorter than the fourth; headand thorax shining; stigma distinctly angulate a little before themiddle, two and one-third times as long as its greatest width; thirdcubital cell slightly wider apically and one-fifth longer than the thirdintercubitus ; second recurrent fully one-third the length of the secondintercubitus from the apex of the cell; sheath straight above, roundedat the apex and sharply oblique. Yellowish-ferruginous; antennae,head above the frontal crest and between the antennal furrows,scutum, prescutum,scutullum, metathorax medianly, tergites median-ly, apex of the sheath, black; legs the color of the body except theapical joints of the four anterior tarsi and apical half of the pos-terior tibiae and all of the posterior tarsi are black; wings hyaline,iridescent; venation, including the stigma, dark brown.Type locality.?Westbury, Long Island, New York. Describedfrom three females reared from larvae collected from Populus ire-muloides and recorded under Bureau of Entomology No. Hopk.U. S. No. 136560, Material collected by A. B. Champlain, and rearedby William Middleton.Type.?C&t. No. 21796, U.S.N.M.AMAURONEMATUS WHITNEYI, new species.In Marlatt's key to the species, runs to orhitalis Marlatt but it islarger and has quite different characters in the head. It bears asuperficial resemblance to similis Marlatt, but may be easily distin-guished from that species by the pale upper part of themesepisternum.Female.?Length 8.25 mm. Robust. Clypeus gently convex, theapical margin with a deep V-shaped emargination, the lobes broad,
No. 2312. NEW NORTH AMERICAN HYMENOPTERA?ROHWER. 217triangular in outline; supraclypeal foveae deep, oval, not connectedwith the antennal foveae; supraclypeal area flat, opaque, trapezoidalin outline; middle fovea large, shallow dorsally, deeper ventrally, theouter margin triangular in outline; ocellar basin poorly defined, thelower and dorsal walls obsolete, the lateral waEs reduced to narrowline-like ridges, probably pentagonal in outline; postocellar line di-stinctly longer than the ocellocular line; postocellar area stronglyconvex, sharply defined laterally by elongate foveae, and anteriorlyby the well defined, curved postocellar furrow; antennae short, notextending beyond the apex of the scuteUum, the third joint a trifleshorter than the fourth, strongly curved beneath; stigma long andnarrow, broader at base where it is slightly angulate; third cubitalcell twice as wide apically as basally, on the radius one-fourtli shorterthan the second; recurrentella jointing the cubitellan ceil the lengthof the intercubitella basad of the intercubitella; ciaw^s deeply cleft,inner tooth slightly shorter than outer; sheath broad, straight above,rounded at the apex, sharply oblique and then gently oblique to thebase. Black; clypeus, labrum, mandibles, palpi, supraclypeal area,entire orbits, posterior ones broadly, most of the postocellar area,most of the pronotum, tegulae, posterior margin of the preseutum,anterior half of the scutellum, posterior margin of the scutum, upperhalf of mesepisternum, yellomsli; legs black; coxae except basallytrochanters, anterior and intermediate tibiae and tarsi, apex of theposterior femora beneath, posterior tibiae, base of the posterior tarsi,yellowish-white; last two tergites and the margins of the four apicalsternites yellowish-white; wings subhyaline, venation dark brown,costa and stigma yellowish.Type locality. St. Paul Island, Bering Sea. Described from onefemale collected April 15, 1914, by A. G. Whitney, and bears his lotNo. 122. Named for A. G. Wliitney.Type.?Cut. No. 21642, U.S.N.M.PACHYNEMATUS GOTARUS Kincaid.Females from St. George Island, Bering Sea, collected in June,1914, by G. Da Has Hanna, at the same time that males of thisspecies were taken seem to be without any doubt the females of thisspecies. In Marlatt's revision they run to pubescens Marlatt, butdiffer from that species in the emargmation of the clypeus and otherhead characters.Female.?Length 6.5 mm. Robust. Clypeus gently convex, theanterior margin broadly, shallowly, arcuately emarginate; supra-clypeal foveae deep, elongate, confluent with the antennal foveae;supraclypeal area opaque, rather strongly convex, triangular in out-line; middle fovea deep, punctiform; frontal crest not broken; ocellarbasin weU defined, triangular in outline, with the lower wall broad;
218 PR0CEEDIN08 OF THE NATIONAL MUSEUM. vol.57.postocellar line very little shorter than the ocellocular Ime; postocellararea strongly convex, well defined laterall}'", almost completely partedby a medium furrow; postocellar furrow nearly v/anting; antennaerather short, the third joint a trifle shorter than the fourth; head andthorax shming, covered with long gray hair; posterior orbits straight;second recurrent mterstitial or slightly beyond the second inter-cubitus; third cubital cell short, its length subequal with the apicalwidth; stigma rounded below; reciirrentella interstitial with theintercubitella; sheath broad, straight above, pointed apically, thenobliquely truncate. Black; clypeus, supraclypeal area, posteriororbits obscurely, mesothorax almost entirely, venter, two apicaltergites and legs except infuscate bases of the coxae and femora,rufopiceous; wings subhyaline, venation pale brown, costa andstigma yellowish.PACHYNEMATUS DOULDEKENSIS, new species.This new specits belongs to group III of Alarlatt and rmis in his keyto paUidiventris (Cresson) but is to be distinguished from that speciesby the smaller middle fovea and subequal third and fourth anten-nal joints. In general appearance it is much like robustiformisKohwer which belongs to group II.Female.?Length, 6 mm.; length of anterior wing, 6 mm. An-terior margin of the clypeus broadly arcuately cmarginate, thelobes triangular and pointed apically; supraclypeal foveae, large,deep, obliquely placed and oval in outline, connected with antennalfoveae; supraclypeal area broad, convex; middle fovea small welldefined, oval in outline; frontal crest fairly prominent and onlyslightly broken; ocellar basin pentagonal in outline incompletelydefined below; antennal furrows complete, broad, shallow; posto-cellar line slightly shorter than the ocellocular line; postocellar fur-row feeble; postocellar area narrow, with a median impression;temples receding; antennae but little shorter than body, slightlytapering, the third and fourth joints subequal; head with scatteredsetiguous punctures; thorax shining, practically impunctate; scutel-lar appendage irregularly aciculate; second recurrent antefurcal bynearly the length of second intercubitus ; stigma large, roundedbelow, two and one-half times as long as broad; sheath straightabove, narrowly rounded apically and tapering to a broad base;cerci long slender. Black, narrov/ apical margin of labriim, palpi,narrow posterior, lateral margin of pronotum, tegulae and ventralaspect of abdomen yellowish ; legs black, four anterior coxae beneath,trochanters, apical part (broader dorsally) of anterior femora, dorsalline on four posterior femora, four anterior tibiae and tarsi, basalthree-fourths of hind tibiae and base of hind basitarsis yellowish;wings hyaline, iridescent; venation and stigma dark brown, costayellowish.
No. 2312. NEW NORTH AMERICAN HYMENOPTERA?ROHWER. 219Jkjfe locality.?Boulder, Colorado. Described from one femalecollected May 9, 1919, by K. Fitzgerald.Type.?C&t. No. 22356, U.S.N.M.PRISTIPHORA BETULAVORA, new species.This species is closely allied to murtfeldtiae Marlatt but may bedistinguished from that species by the smooth, polished scutellarappendage and the depressed area latrad of ocelli.Female.?I^ength, 5. 5 mm. Supraclypeal area prominent, tri-angular in outline; middle fovea shallow, oval in outline; antennalfurrows indicated only by broad shallow depressions which causethe central area to appear somewhat raised ; postocellar line distinct-ly longer than the ocellocular line ; postocellar furrow straight ; frontpunctured, the punctures smaller and more widely separated later-ally; vertex and temples polished; antennae tapering, the thirdjoint not much longer than the fourth, the fourth and fifth subequal;scutum with only a few widely scattered punctures; scutellum andappendages smooth, shining; stigma rounded below; fkst intercubituswanting; second recurrent about length of second intercubitus fromapex of cell ; third cubital slightly longer than apical width. Black ; palpiin part, narrow apical margin of labrum, tegulae, trochanters, apicesof anterior femora, four anterior tibiae and tarsi, basal two-thirds ofhind tibiae white; wings hyaline, venation including costa and stigmadark brown.Male.?Length, 4 mm. Agrees in structure and color with thefemale; flagellum reddish-yellow beneath.Type locality.?East River, Connecticut. Described from three(one type) females and one male. Material collected by Chas. R.Ely as larvae feeding on white birch {Betvla alha) and reared at EastFalls Chm-ch, Virginia, under Bureau of Entomology numbers Hopk.U. S. 10757(^ (type, allotype and paratype) and Hopk. U. S. 10745m.Type.?Cat. No 22323 U.S.N.M.Superfamiiy CYNIPOIDEA.HESAPLASTA LUCIDA, new species.Of the described North American species this new species is morelike H. wehsteri Crawford, but may easily be distinguished from itby the different sculpture of the scutellum and longer pedicellum.Female.?Length 2 mm. Head without sculpture; postocellarline subequal with ocellocular line; pedicellum subequal in lengthwith the fourth joint and only a little shorter than the third joint;general outhne of antennae about as in wehsteri but the apical jointis about one-fourth longer than the preceding; apex of elevation ofscutellum with a large fovea; basally there are also two large fovea;
220 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.57.scutellum latrad and apicad of elevation closely irregularly punc-tured; propodeum with short white hair and a low median ridge; hairband on first tergite dense, tawny; first abcissa of radius distinctlyshorter than the second. Black; mandibles, joints of legs basally,apices of femora, all tibiae and tarsi rufo-piceous ; wings hyaline;venation brown.JIale.?Length 2 mm. Except for usual sexual characters agreeswith the description of female; antennae 15-iointed, pedicellumabout one-third length of third joint, flagelar joints nearly of uniformthickness and length.Type locality.?Syracuse, New York. Described from two femalesand one male reared by M. W. Blackman and H. H. Stage fromEicoiia glabra and recorded under their numbers H-1820 (type),H-1898 (paratyi^e) and H-1956 (allotype).Type.?Csit. No. 22028 U.S.N.]\i.Superfamily ICHNEUMONOIDEA.Family ICHNEUMONIDAE.Genus LISSONOTA Gravenhorst.The species here described are believed to be congeneric withLissonota sulfliurifera Gravenhorst, the genotjrpe of the genusLissoTwta} USSONOTA EVETRIAE, new species.This species is closely allied to pleuralis (Cresson) but may bedistinguished by the longer and more finely sculptured tergites andfrom the typical form by the rufous scutum.Female.?Length, 6.5 mm. Clypeus shining, the anterior marginbroadly rounded; face with distinct separate punctures; vertex, frontand scutum similarly but more sparsely punctured; propodeumwith punctures similar to those on the face, the apical carina welldefined but not specially prominent; tergites long and narrow, thesecond but little shorter than the first, the third slightly shorterthan the second, the first finely obliquely aciculate laterally and inaddition to the aciculations with small scattered punctures, vrithouta transverse sculptured depression apically; second tergite withsmall scattered punctm-es except just before the apical lateralmargins where the punctures are almost confluent; third tergitemiiformly, sparsely punctured; areolet sessile; nervulus postfurealat tlu-ee fourths its length; nervellus angulately broken below themiddle; ovipositor slightly longer than the insect. Black; clypeus,mandibles except apices, spot on inner orbits opposite the ocelli,antennae, spot on the inner superior orbits, the usual spot on the
? See Viereck, Bull. 83, U. S. Nat. Mus., 1914, p. 86.
No. 2312. 2^EW NORTH AMERICAN HYMENOPTERA?ROHWER. 221scutum, tegulae, a spot beneath, spot on the sides of the pronotum,anterior coxae and trochanters white; mesoscutum spot on thescutellum, mesepisternum beneath, legs except dusky apices of theposterior tibiae and the posterior tarsi rufo-ferruginous; wingshyaline, iridescent, venation dark brown.Male.?^Length, 5 mm. The punctm-ation of the male is sparserthan in the female; otherwise the structural characters of the aboveapply well to this sex. Black; clypeus, mandibles, face, lowerposterior orbits, inner superior orbits, the usual spots on mesepi-sternum extending back beyond the middle a spot on thesides of the pronotum, oblique line on the mesepisternum, fouranterior coxae and trochanters white; legs ferruginous except thedusky spot and the posterior trochanters above, the apices of thehind tibiae and the posterior tarsi which are dusky; wings hyaline,iridescent, venation pale brown. In the male the coloration of thehind coxae varies from the usual ferruginous color through a piceousspot to an entirely piceous coxae.Type locality.?Cheyenne, Mountains, Colorado. Described fromfour females (one, type) and five males (one, allotype) recorded underBureau of Entomology, Hopk. U. S. Nos. 132836 (type) and 13295&,material collected by J. H. Pollock and reared at the field stationat Ashland, Oregon where it was determined that this species is aparasite in the cocoons of Evetria taxifoliella Busck.Type.?Ca.t. No. 20782, U.S.N.M.LISSONOTA DIORYCTBIAE, new species.The sculpture of this species is very similar to that of pleuralis(Cresson) but the marking of the abdomen is quite different. Allthe specimens of the species have the areolet incomplete, that is, thesecond intercubitus obliterated.Female.?Length, 5 mm. Clypeus convex, shming the anteriormargin narrowly truncate; face and front coriaceous; mesoscutumwith close distinct punctures; propodeum with distinct separatepunctures, the apical carina well defined and promment; dorsal aspectof the propodeum with a faint median, longitudinal impression whichis not however boimded by a carina; nervulus postfureal at haK itslength; nervellus broken below the middle; tergites rather short andcoarsely sculptured, the first one-third longer than the second,punctured basally, the apical margin irregularly rufous; secondsubequal in length to the third, v/ith coarse, close punctures whichapically become confluent; the third has punctures uniform but alittle more separated than in the second; ovipositor almost as longas body. Black; clj^peus, labrum, inner orbits, face except the medianline obscurely, the usual spots on the mesoscutum, the four anteriorcoxae and trochanters white; mesoscutum, mesepisternum, meta-
222 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57.pleura, scutellum, apical margin of all the tergites and legs, exceptwhere mentioned, rufo-ferruginous.Type locality.?Patrick's Creek, California. Described from twofemales recorded under Bureau of Entomology Nos, Hopk. U.S. 14265Z (type) and 14265/, material collected by J. M. Millerand J. E. Patterson and reared at the station at Ashland, Oregon,where it was determined as a parasite of Dioryctria xantliaenohares.Type.?Csit. No. 20783, U.S.N.M.LISSONOTA CONOCOLA, new species.The species comes close to incita (Cresson) and angusta (Davis) butmay be separated from both these by the different orbital markingand by having the venter mostly black.Female.?^Length, 7 mm. Ciypeus very slightly convex, theanterior margins truncate; surface with setigerous punctures;face opaque with a few small poorly defined punctures; front, meso-scutum vdth well defined separated small punctures; mesepisternummore sparsely punctured; propodeum punctured similarly to themesoscutum, the apical carina very prominent; nervulus postfurcalat one-fourth its length; nervellus angulately broken below themiddle; tergites rather short, the first slightly longer than the secondwith close small punctures, basally just before the apical margmit becomes rather coarsely striato-punctate ; second tergite opaque ,v,dth small poorly defined punctures, before the apical lateral margmsstriato-punctate; the third and fourth tergites uniformly rathercoarsely sculptured; ovipositor as long as msect. Black; apical partof ciypeus, mandibles except apices, small spot on the mesoscutumand tegulae white; legs ruf.o-ferruginous, the posterior tibiae andtarsi dusky; wings hyaline, venation dark brown.Male.?Length 6.5 mm. Puncturation not as coarse as in thefemale and the dorsal aspect of the propodeum has an mdistmctlongitudmal median depression. Black; ciypeus mandibles exceptapices, face except three projections above, spot on the superiororbits, anterior lateral margms of the scutum, tegulae, an irregularline on the mesepisternum, four anterior coxae and trochanters v?^hite;the rest of the legs except dusky posterior tibiae and tarsi rufo-ferruginous.Type locality.^Mineral Kmg, California. Described from twofemales and two males recorded under Bureau of Entomology No.Hopk. U. S. 13296e which refers to a note stating that these areparasitic on some insect living in the cones of Alies sTiastensis, materialcollected by F. P. Keen.Type.??Q.t. No. 20784, U.S.N.M.
No. 2312. j^Ew NORTH AMERICAN UYMENOPTERA?ROHWER. 223EXOCHUS (TRICUSTUS) EVETRIAE, new species.Structurally this species is very close to annulicrus Walsh but isreadily separated from that species by the black coxae. In Davis'review of the Tryphoninae this species goes to congener Holmgren butis very easily distinguished from that species by the emarginateocciput.Female.?Length, 6 mm. Face sliining with distinct, large, sepa-rated punctures; front and vertex of orbits impunctato; inner marginsof eyes nearly parallel; first joint of the flageilum a little shorter thanthe two foUomng in length; occiput emarginate; mesoscutum andscutellum shining, with sparse setigerous punctures; propodeumshining, with a few setigerous punctures; costulae wanting; the pairedlongitudinal carinae diverging at the basal third indicating an areola;areolot wantmg; nervulus postfureal by a little more than half itslength; abdomen shining, with distinct widely separated punctureswhich are closer to the middle. Black; tegulae brovvTiish; legs belowthe trochanters, except the dusky posterior tibiae apically and theirtarsi, rufo-ferruginous; wings hyaline, venation pale brown, stigmadark brown.Tiji)e locality.?Butte Falls, Oregon. ParatyiJe locality:?GrantPass, Oregon. Described from two females recorded under Bureauof Entomology Nos. Hopk. U. S. 12530(^ (type) and 12556ca, materialcollected by J. M. Miller and P. D. Sargent, and reared as a parasiteof the pupae of Evetria taxifolieUa (paratype) and Evetria sisJciyouana(type) at the laboratory at Ashland, Oregon.Type.?C&t. No. 20785, U.S.N.M.MESOLEIUS ARTICULARIS Davis.The foUomng notes made from the type by R. A. Cushman may beuseful in assisting in the identification of this species:Length, 6 mm. Posterior orbits straight; malar space subequalwith the width of the mandible at the base; eyes much shorter thanthe width of the face and with their inner margins parallel; only theclypeus and mandibles yellow; first tergite two thirds as wide as long;all of the coxae nearly entnely black; liind tibiae j^ellow, reddish atapex; hind tarsi reddish.MESOLEIUS GYMNONYCHI, new species.This species according to Davis' classification is more closely alliedto articularis Davis than to any other species, but the type of the newspecies has been compared with the type of Davis' species by Mr.Cushman and the following essential differences are noted: Smaller;posterior orbits rounded; malar space one-half the width of the man-dible; length of the eyes equal to the width of the face, their inner
224 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57.margins converging below; face in the middle yellow; first tergite one-half as wide as long; color of legs different.Female.?Length, 4 mm. Head opaque, finely granular; posto-cellar line slightly shorter than the ocellocular line ; inner margins ofthe eyes distinctly converging below; length of the eyes subequalwith the width of the face below the antennae; apical margin of theclypeus rounded, very slightly depressed; thorax shining, practicallyimpunctate; propodeum shining, \\'ith irregular puncturation alongthe dorsal carinae; tergites shining. Black; mandibles except apices,clypeus, a large spot in the middle of the face, apex of the scapebeneath, tegulae, a spot before, the narrow apical margins of tergites2 and 3, yellow; posterior coxae the apices of the first trochanter,apical third of the posterior tibiae, posterior tarsi except a narrowring at the base, black; wings hyaline, iridescent, vanetion pale brown;costa and stigma slightly darker.Type locality.?Wenatchee, Washington. Described from one fe-male reared April 24, 1915, as a parasite of GymnonycJius californicusMarlatt by E. J. Newcomer, and reported under Bureau of Entomol-ogy No. Quaintance 11416.Type.?Cat. No. 21641, U.S.N.M.Genus EXENTERUS Hartig.An examination of the species placed by Davis ^ in the genus Picro-scopus and a comparison of them mth the genotype of Exenterusshows that they more properly belong to Exenterus. The -writer is ofthe opinion that, if the characters offered in the tables to separatePicroscopus from Exenterus are the only differences, the genus Picro-scopus should be suppressed and considered as a synonym of Exen-terus Hartig.The American representatives of the genus Exenterus make twowell defined groups. The first group is represented by a single species,lopliyn Viereck; the second contains the rest of the American speciesall of which are closely allied. Exenterus Jiullensis Provancher is notrepresented in the United States National Museum collection and isnot included in the following table. When examining the type ofthis species I stated that the claws were not at all pectmate and that itwould run to the genus Anecphysis in both Ashmcad's and Davis'tables. An examination of the genotype of AnecpTiysis shows thatJiullensis does not belong there, and since all other characters agreevery closely with Exenterus it is believed that the observation on theclaws may be an error and that there are a few short teeth at the base,according to the notes and the original description of Jiullensis it maybe separated from the other American species by the oblique depres-sions on the second tergite.iTrans. Amcr. Ent. Soc, vol. 24, 1917, p. 229.
No. 2312. 2^EW NORTH AMERICAN HYMENOPTERA?ROEWER. 225TABLE TO THE SPECIES.1. Propodeum uniformly sculptured; first and second tergites sculptured like the fol-lowing lophyri Viereck
.
Propodeum more coarsely sculptured medianly; first and second tergites morecoarsely sculptured than the following 2
.
2. Third antennal-joint distinctly shorter than the fourth and fifth; carinae of the firsttergite short, extending but a short distance beyond the middle; shining gastro-celi of the second tergite indistinct; four anterior femora partly black 3.Third antennal Joint subequal with the fourth and fifth; the carinae of the first ter-gite extending much beyond the middle; shining gastroceli of the second tergitedistinct 4.3. Vertex and scutum closely punctured; face mostly yellow; sculpture on the firsttwo tergites verj^ coarse; stigma more than three times as long as broad.canadensis Provancher.Vertex and scutum with distinct well separated punctures; face mostly black-sculpture of the first two tergites not nearly as coarse; stigma a little more thantwice as long as broad nigrijrons Rohwer.4. Four anterior femora pale; second tergite with very coarse punctures which aremostly confluent diprioni Rohwer.Four anterior femora mostly black; second tergite not as coarsely sculptured andmore of the punctures distinct affinis Rohwer.EXENTERUS LOPHYRI Viereck.In describing this species Viereck gave as host Lopliyrus townsendibut it should be corrected to Neodiprion (Zadiprion) grandis(Rohwer)
.
EXENTERUS CANADENSIS Provancher.Allotype female in the second Provancher collection, public museum,Quebec, bearing a yellov/ label with No. 953 ; in good condition.Type.?Male is not in the public museum, Quebec, and has notbeen examined. EXENTERUS AFFINIS, new species.Female.?Length, 8 mm. This species is very like diprioni andexcept for the characters mentioned in the foregoing table the descrip-tion of diprioni applies equally well to this species.Type locality.?Maine. Described from a single female recordedunder Bureau of Entomology No. Hopk. U.S. 12070/, and rearedfrom a cocoon of a species of Neodiprion sent in by a correspondent asfeeding on Pinus resinosa. The specimen issued May 18, 1915.Type.?Cat. No. 21060 U.S.N.M.EXENTERUS NIGRIFRONS, new species.This species is closely allied to canadensis but the characters givenin the foregoing table show the differences between the two species.Female.?Length, 8.5 mm. Face with close confluent punctures;frons shining with distinct well defined punctures; strong semicir-cular depressions around the ocelli; area between the ocelli and the144382?20?Proc.N.M.Tol.57 15
226 PROCEEDINGS OF THE NATIONAL MUSEUM. ^o^. 57.
eyes impunctate; postocellar line subequal with ocelloccipital line andocellociilar line; pronotum impunctate dorsally, sparsely puncturedlaterally; mesonotum shining \\dth distinct well defined punctureswhich are separated by the width of a puncture; propodeum coarselysculptured in the middle, sides wdth the punctures distinct, close butnot confluent; petiolar area well defined; first tergite one and one-fifth times as long as apical Avidth, parallel sided, the carinae termi-nating approximately at the middle, coarsely confluently punctured
;
second tergite with coarse confluent punctures; the third and fol-lowing tergites shining with the punctures separated by about one-half their width. Black; spot on the mandibles, most of the clypeus,two spots in the middle of the face, scape beneath, inner orbitsnarrowly, posterior orbits on the lower half, spot on the side of thepronotum, part of the tegulae, spot beneath, the usual spot on thescutum, most of the scutellum, the metanotum, two small spots on thepropodeum, apical margin of the first, second, third, fom'th, fifth, andsixth tergites (from the second to sixth the band is present onlymedianly) yellow; legs black; trochanters, four anterior femora be-neath, four anterior tibiae and tarsi, basal two-thirds of the hindtibiae and most of the hind tarsi yellow; wings dusky hyaline, vena-tion brown.Type locality.?Washington, District of Columbia. Described froma single female collected May 28.Type.?C&i. No. 21061, U.S.N.M.EXENTERUS HTLLENSIS Provancher.Type.?In Harrington collection bearing label P. 581.Paratypes of this species are in the second Provancher collectionpublic museum, Quebec, bearing blue lable 468 and yellow lable 1238.FAMILY BRACONIDAE.CARDOCHILES THERBERIAE, new species.Apparently allied to C. thoracica (Cresson) but the head is darker,the legs and thorax differently marked.Male.?Length, 5 mm. Head smooth and shining; imier orbitsslightly converging below; ocelli in an equilateral triangle; eyeshairy; flagellum distinctly tapering apically, the first joint aboutone-fifth longer than the fourth; thorax smooth, polished; notaulifeebly foveolate; propodeum roughened, the median area well defined,diamond-shaped; abdomen smooth, polished; first abcissa of radiushalf as long as second and slightly shorter than thu-d which is sub-equal in length with the second intercubitus. Black; thorax andpropodeum ferruginous; clypeus, inner obits narrowly, elongate spoton posterior orbits dorsally, anterior legs below middle of femora,apices of intermediate femora, basal two-thirds of their tibiae, all of
No. 2312. NEW NORTH AMERICAN HYMENOPTERA?ROEWER. 227their tarsi and middle of first tergite yellov?ash-ferruginous ; wingsuniformly dark brown, venation, including stigma, black.The paratype has the head almost entirely black.Type locality.?Sabino Basin, Santa Cataiina Mountains, Arizona.Described from two males collected August 28, 1918, on foliage ofTherheria by C. H. T. Townsend.Type.?C&t. No. 22033 U.S.N.M.MICROTYPUS DIORYCTRIAE, new species.This species agrees very well with the generic descrif)tion given byRatzeburg and his figures of the wing venation. It is the first Amer-ican species to be described in this genus.Female.?Length, 5.5 mm. Head shining; the face with a fewscattered punctures; supraclypeal foveae deep, punctiform, anteriormargin of the clypeus rounded; the posterior orbits much narrowerthan the diameter of the eye; third and fourth antenna! joints sub-equal; ocelli prominent; postocellar line subequal with the ocellocularline; mesoscutum polished; notauli well defined, finely foveolate; de-pression in front of the scutellum with one prominent median carinaand a number of short rugae; lateral areas of the propodeum shining,impunctate; apical dorsal middle and the posterior face reticulate,the sides polished, impunctate with a distinct median carina whichbecomes weaker posteriorly and divides; mesepisternum polished;legs long, slender; stigma large, triangular, the radius leaving itbeyond the middle; the first abscissa of the radius not quite half aslong as the second; nervulus postfurcal about half its length; abdomenas long as the head and thorax together; the first segment longitu-dinal, aciculate; the base of the second tergite witli a few aciculations;the third and remaining segments polished, impunctate; lateralmargins of the second and base of the third depressed; ovipositor aslong as the body. Ferruginous; the sides of the scutellum, metano-tum, propodeum, most of the mesepisternum, the first, apical margin,the third, most of the fourth and ail of the following tergites black;antennae and flagellum black; wmgs hyaline, iridescent, venationdark brown, stigma slightly paler at base.Male.?Length 4.5 mm. The structure of the male agrees withthe female except the lateral areas of the propodeum have a few punc-tures. Black; head except the interocellar area, scape, pronotum,legs except the dusky posterior tarsi and bases of the hind tibiae, thesecond and third abdominal segments rufo-ferruginous ; vvings hya-line, iridescent, venation dark brown. The extent of the black onthe mesepisternum and abdomen varies considerably and it may beexpected that specimens with more black than the description callsfor will be found.
228 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57.Type locality.?Patricks Creek, California. Described from fourfemales and two males recorded under Bureau of Entomology No.Hopk. U. S. 14265/, material collected by J. M. Miller and J. E.Patterson and reared at the station at Ashland, Oregon, where it wasdetermined to be a parasite of Diorydria xantliaenGbares.Type.?C^t. No. 20794, U.S.N.M.Superfamily MUTILLOIDEA.ELI3 EPHIPPIUM (Fabricias).Tiphia epMppium Fabricius, Syst. Ent., p. 775, p. 353.Plesia ephippium Jurine, Nouv. Meth., 1807, p. 152.EHs epUppiura Turner, Proc. Zool. Soc, 1912, p. 724.Elis xanihonolus Rohwer, Proc. U. S. Nat. Mus., vol. 49, 1915, p. 234.I am much indebted to Mr. Rowland E. Turner for pointing outthis synonymy. The only excuse for it is the erroneous treatmentof Tiphia ephippium Fabricius given in Dalla Torre's catalogue.PEDINASPIS (PSORTHASPIS) PORTiAE, new species.Allied to contigiius (Cresson) but readily distmguished by the densered hair on the thorax.Female.?Length, 18 mm. Anterior margin of the clypeus gentlyrounded; no impressed line below anterior ocellus; ocelli in a low tri-angle, the posterior ones well l)elow the supraorbital line, postoceliarline more than twice as long and the intraoceliar Ime but about one-fourth sliorter than the ocellocular line; third antennal joint onlyslightly longer than the fourth; posterior margin of the pronotumgently arcuately emarginate; posterior face of the propodeum withstrong transverse wrmkles; first two abcissae of radius of subequallength and distinctly shorter than the third which is somewhat shorterthan tlie fourth; nervulus postfurcal, curved. Black with bright red-dish appressed hair on head, pronotum, mesonotum, tegialae, base ofscutellum and abdomen beyond basal third of second segment; basalabdominal segments with a faint purplish tinge; wmgs uniformlyblackish; venation black; legs, antennae and mandibles black.Type locality.?Sabino Basin, Santa Catalina Mountains, Arizona.Described from one female collected September 17, 1918, on Therheriaby C. H. T. Townsend.Type.?Cat. No. 22032 U.S.N.M.Superfamily SPHECOIDEA.UIODONTUS CORUSANIGEENS, new species.In Fox's key ^ to the North American species of Psen tliis speciesruns in with cylindricus and mixtus but the smooth scutum, carinae onthe face and venation will readily distinguish it from both of these.
? Trans. Amer. Ent. Soc, vol. 2.5, 1898, p. 3.
No. 2312. NEW NORTH AMERICAN HYMENOPTERA?ROHWER. 229Male.?Length 6 mm. Clypeus gently convex, the anterior marginwith two distinct teeth medianly which are separated by an arcuateemargination ; base of the clypeus and the face below the carina finelyaciculate over a finely granular surface; face strongly elevated belowthe antennae, the vertical margin of the elevation bounded by a sharptransverse carina which is notched dorsally at the middle and does notreach the inner eye margin; seen from in front this elevation has twostrong median carinae which converge and unite a short distancebefore the transverse carina which they join at the median notch;hes e carinae also converge and unite a short distance above theantennae and extend dorsally as a strong carina to the anterior ocel-lus; front, vertex and posterior orbits shining with widely separatedsmall punctures; ocelli in a low triangle, the postocellar line subequalwith the ocellocular line; antennae short, stout, slightly thickeningapically, third joint slightly longer than fourth and twice as long aspedicellum; pronotum with a sharp transverse carina anteriorly butnot dentate laterally ; scutum and scutellum shining, with a few widelyseparated small punctures; suture between scutum and scutellumstrongly foveolate; metanotum punctured like the scutellum; pro-podeum with the basal inclosure with strong rugae which becometransverse posteriorly; dorsally the rest of the propodeum is polished,impunctate; posterior aspect of the propodeum finely transverselyrugulose on a granidar surface on each side of the deep median chan-nel; meso and metapleurae polished practically without sculpture;the oblique suture on mesepisternum foveolate; sides of propodeumsculptured like the posterior aspect; legs rather short; longer calcariaof hind tibiae curved and subequal in length with the hind basitarsis;petiole trisulcate dorsally, subequal in length with the rest of the firsttergite, shorter than the hind femora; abdomen shming, impunctate;first and third abcissae of radius subequal fully three times as long asthe second abcissa; first recurrent closer to the base of the secondcubital than the second recurrent is to the base of the third cubital;hind wings normal. Black; rather sparsely clothed with silvery hair;wings hyaline, iridescent; venation very dark brown.Type locality.?St. Louis, Missouri. Described from one male col-lected July 6, 1918, by Phil Rau and forwarded under his number3584.Type.?Cat. No. 21990 U.S.N.M.TRYPOXYLON PLESIUM, new species.This species belongs to the group oifrigidum and is closely relatedto frigidum Smith, but may be separated from that species by havingthe propodeum reticulate dorsally instead of with uniform obliquestriae.FeTYiale.?Length, 8 mm. Anterior margin of the clypeus with anarrow median projection which is very feebly emarginate; a distinct
230 PROCEEDINGS OP THE NATIONAL MUSEUM.prominent carina between the bases of the antennae; frontal impress-ed line incomplete; ocellocular line less than one-half the length ofthe postocellar line ; scutum opaque, finely, rather closely, puncturedwith smaller indistinct punctures in the interspaces ; scutellum moresparsely sculptured, not impressed; propodeum without a mediancarina dorsally, the surface reticulate, with a few prominent ridgesbasally; mesepisternum shining, finely granular; sides of the pro-podeum with uniform obhque striae. Black; tibial spurs whitish;apical joints of the tarsi shghtly reddish; wings hyaline, iridescent,with the apical margin dusky, venation dark brown.Type locality.?St. Louis, Missouri.Parattjpe locality.?Northern Illinois, Described from two femalesfrom the type locality, the type Rau No. 3135, the paratype underRau No. 2337; and three females from the paratype locality.Type.?C&t. No. 21611, U.S.N.M.CERCERIS RAUI, new species.The female of this species loofe very much like hicornuta Guerin,but the clypeus extends forward as a free plate. The general struc-ture of the clypeus is sunilar to that oi frontaia Say, but the darkerbody color a,nd darker wings readily separated this from Say'sspecies.Female.?Length, 20 mm. The median prominence of the clypeusfree, projecting at an angle of about 30 degrees from the front;the anterior margin deeply, arcuately emarginate, the lobes narrow,triangular; this frontal projection is one-third wider than its greatestlength; the apical margin wath dense yellowish hair; face and pos-terior orbits with large, close punctures; superior orbits and vertexshining with large, separate punctures; sides of the pronotum witha few rugae, the anterior one much stronger; mesepisternum punc-tato-reticulate with small punctures in the interspaces; mesoscutumwith large, irregular, sometimes confluent punctures and with smallerintermediate punctures posteriorly; scutellum with scattered punc-tures; propodeal inclosure finely granular (under high magnification)with a few large, sparse, well-defined punctures ; first tergite with amedian depression posteriorly; abdomen with large separate punc-tures; the fourth and following segments with smaller, somewhatmore widely separated punctures; pygidium truncate apically, apicaland basal width subequal ; sides slightly rounded so the margin vndthis somewhat greater; sides with a strong fringe of reddish hair.Black and fermginous ; head ferruginous, witli clypeus, spot betweenthe antennae and spot on the posterior orbits above yellow; themiddle of the face, frons, and a supraorbital spot black; antennaeblack with the basal four joints and following three joints beneathrufo-ferruginous ; thorax black; pronotum dorsally, two large spots
No. 2312. NEW NORTH AMERICAN HYMENOPTERA?ROHWER. 231on the propodeum rufo-ferruginous ; two small spots on the pronotum,tegulae, two spots on the scutellum, and the postscutellum yellow;abdomen ferruginous with the sutures black; the apical margin ofthe second, third, and fourth segments yellow; the bands on the secondand third segments much broader laterally; legs rufo-ferruginousthe four anterior tibiae, posterior femora beneath and the posteriortibiae yellowish; body densely clothed with long gray hair; wingsviolaceous, venation black; stigma ferruginous.Paratype females indicate that the species may vary as follows:Black of the head entirely replaced by ferruginous ; there may be twoyellow marks in the superior orbits to the middle of the vertex; theblack of the mesothorax may be largely ferruginous; when the blackis replaced by ferruginous, the yellow spots are somewhat larger.What may be the male of this species is closely allied to venatorCresson, but the first tergite is red and the hind basitarsis is straight.In these two characters it is similar to mimica Cresson, but differsfrom that species in the longer apical joint of the antennae.Male.?Length, 17 mm. Anterior margin of the clypeus with broad,hairy lobes, medianly tridentate; front and face shining, with dis-tinct separate punctures; third antennal joint distinctly longer thanthe fourth; apical joint of the antenna longer than the preceding,strongly concave beneath, truncate apically; the sculpture of thethorax is similar to that of the female, except that the propodealinclosure in entirely smooth and polished medianly, but with thelarge scattered punctures laterally; pygidium truncate apically,strongly margined laterally, and about one-fourth broader at thebase than at the apex. Black; face and clypeus, two spots on thepronotum, tegulae, metanotum, bands on the second, third, fourth,fifth, and sixth tergites (those on the second and third much broaderlaterally) yellow; basal three joints of the antennae and first tergiterufo-ferroginous ; legs rufo-ferruginous ; intermediate coxae andtrochanters beneath, the posterior coxae and trochanters, base ofthe femora beneath, all of the tibiae beneath and most of the tarsiyellow; body densely clothed with long gray hair; wings subhyaline,the apical margin strongly dusky, venation dark brown costa andstigma ferruginous.Type locality.?Near St. Louis, Missouri. The type is under PhilRau's No. 3304; the allotype (male) in under his No. 3259; twoparatypes (females) from Lake view, Kansas are under Phil Rau, No.190. All the material was collected by Phil Rau, for whom the speciesis named.Type.?Cat. No. 21610, U.S.N.M.