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 Ricker, W.E. & Ross, H.H. (1975) Synopsis of the Brachypterinae (Insecta: Plecoptera: Taeniopterygidae). Canadian Journal of Zoology 53, 132–153.