This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
Troutnut on Aug 23, 2006August 23rd, 2006, 5:20 pm EDT
I went fishing for a few hours yesterday and caught a few cool new bugs for the site. There's a little black caddis adult, a naturally crippled Isonychia bicolor spinner (check out the deformed wing -- it's cool), and a pretty Stenacron dun.
You can view them by going to the site homepage or the main "aquatic insects" section and looking at the "Recent Updates" list in the left column.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist