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.
My friend Willy captured this early instar damselfly nymph and brought it to me for identification. It is more robust and stocky at this early stage than the spindly appearance of the later instars, and its appearance is less familiar.
DMM on Nov 26, 2006November 26th, 2006, 5:05 pm EST
One reason I think it's Argia, is that this genus is characteristically "stubby" and "robust" through the last instar. Without verification, I think it is the stubbiest of the Zygoptera.