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.
Described by Poulton, B.C. & Stewart, K.W. (1991) The stoneflies of the Ozark and Ouachita Mountains (Plecoptera). Memoirs of the American Entomological Society 38, 1–116.