Siphlonurus alternatus (Say, 1824)  

Family: Siphlonuridae

[Baetis alternata Say, 1824, moreBaetis alternatus Say, 1824, Baetis annulata Walker, 1853, Baetis annulatus Walker, 1853, Siphlonurus annulata (Walker, 1853), Siphlurella alternata (Say, 1824), Siphlurus alternans (Say, 1824), Siphlurus alternatus (Say, 1824)]