The western Nearctic stonefly genus Soliperla is reviewed and six species are recognized. Soliperla sierra (Calif.) and S. tillamook (Ore.) are described as new to science and illustrations of diagnostic features are presented for all species. Males and nymphs are keyed and a phylogeny for the group is proposed.
Stark, Bill P.
"A review of the genus Soliperla (Plecoptera: Peltoperlidae),"
Great Basin Naturalist: Vol. 43
, Article 2.
Available at: http://scholarsarchive.byu.edu/gbn/vol43/iss1/2