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For Insects, Spiders & Their Kin
For the United States & Canada
Photo#261565
Black Fly - Stegopterna mutata

Black Fly - Stegopterna mutata
Carlisle, Middlesex County, Massachusetts, USA
March 27, 2009
Size: ~7mm
I found hundreds of these larvae on the underside of a submerged log in a small stream.

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Black Fly - Stegopterna mutata Black Fly - Stegopterna mutata

Moved
Moved from Black Flies.

Stegopterna mutata/duplomutata
The two species can be separated only by analysis of the chromosomes. Id ex. John Burger.