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Simulium venustum

Simulium venustum.jpg ThumbnailsBeak of hemipteronThumbnailsBeak of hemipteronThumbnailsBeak of hemipteron

The Simuliidæ, or black flies, are small, dark, or black flies, with a stout body and a hump-back appearance. The antennæ are short but eleven-segmented, the wings broad, without scales or hairs, and with the anterior veins stout but the others very weak. The mouth-parts are fitted for biting.