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A review of the South American two-winged flies of the family Syrphidae
Date:
1927
Citation:
Shannon, Raymond C. 1927. "A review of the South American two-winged flies of the family Syrphidae." Proceedings of the United States National Museum. 70 (2658):1–33, 1 pl.. https://doi.org/10.5479/si.00963801.70-2658.1
