Nearctic Nemoura trispinosa Claassen, 1923 and N. rickeri Jewett, 1971 are junior synonyms of Holarctic Nemoura species (Plecoptera: Nemouridae)

The article appeared on April 2 in the journal Illiesia.  The authors found Nearctic Nemoura rickeri to be a junior synonym of Nemoura sahlbergi, which affects Alaskan specimens.

http://illiesia.speciesfile.org/papers/Illiesia14-3.pdf