| 1a. Apex of epiproct smoothly rounded; entire apex densley pilose (difficult to see with an ordinary dissecting microscope); stripe on back of abdomen; Higher elevations. Alloperla pilosa |  |
| 1b. Epiproct apex rounded with shallow crenulations; apical half of epiproct bare, densely pilose in basal half; abdomen boring, no stripe. Alloperla_severa |  |