Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
This is actually a specimen of Acroneuria abnormis. Paragnetina species have a complete set of spinules/setae on the occiput, which this guy is lacking. On a semi-related subject, could you forward me the collection data for the Arcynopteryx paralella you got from the Catskills? Thanks a bunch.