The Genitalia of Male Syrphidae: Their Morphology, with Especial Reference to Its Taxonomic Significance

C L Metcalf

Published in Annals of the Entomological Society of America, in 1921, in volume 14, issue 3, pages 169-214

Date published:1921

DOI: 10.1093/aesa/14.3.169
BHL: 11917953
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