Black fly

Moved

Moved from Flies.

I was swarmed by black flies in Brimfield State Forest on Saturday.

I think this is a Prosimulium but I'm not sure. If it's biting you it's female.

… John F. Carr, 27 April, 2010 - 5:57am

Thanks

What details would you need to see to know for sure?

… Charley Eiseman, 27 April, 2010 - 7:58am

Features

Is Rs forked or not? The branches can be very close together.

Simulium has basal R cell 1/4 or less wing length and Rs not forked.

Other Simuliini have normal length R cell (~1/3 wing length) and Rs not forked or only forked for a very short distance at the tip.

Prosimuliini have normal length R cell and Rs forked about half its length with branches possibly very close together.

… John F. Carr, 27 April, 2010 - 8:48pm

Drat

I can almost imagine there being very close branches, but I guess I'll have to try harder for a perfectly dorsal shot next time. At least they're good at holding still!

… Charley Eiseman, 27 April, 2010 - 9:07pm