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cheilosia

The genus Cheilosia meigen (Diptera, Syrphidae)

By Frank M. Hull

Black check in western hemlock

By H. E. Burke

Revision of the Palaearctic bare-eyed and black-legged species of the genus Cheilosia Meigen (Diptera, Syrphidae)

By Anatolij V. Barkalov