(Figs. 183–185 in Lohse et al. 1990 (as Boreostiba hudsonica))
Atheta (Ousipalia) parvipennis Bernhauer, 1907: 398.
Atheta (Ousipalia) parvipennis: Fenyes, 1920: 252 (as valid species).
Atheta (Ousipalia) parvipennis: Bernhauer & Scheerpeltz, 1926: 620 (as valid species).
Atheta (Ousipalia) parvipennis: Moore & Legner, 1975: 369 (as valid species).
Geostiba parvipennis: Seevers, 1978: 261 (as valid species).
Boreostiba hudsonica Lohse in Lohse et al., 1990: 193, syn. nov.
Type material. Lectotype of Atheta parvipennis (here designated): ♂, “ Banff Alta [Alberta] 06.6.24 [6.vi.1924] Dr A Fenyes”, “294.”, “79”, “ parvipennis Brh. Typus.” (yellow label), “Chicago NHMus M.Bernhauer Collection ” (FMNH). Paralectotypes: ♀, “ Banff Alta [Alberta] 06.6.24 [6.vi.1924] Dr A Fenyes”, “285.”, white square, “ Atheta parvipennis Brnh. ”, “ parvipennis Brh. Cotypus. ” (yellow label), “Chicago NHMus M.Bernhauer Collection ” (FMNH).
Holotype of Boreostiba hudsonica: CANADA: Québec: ♂, Great Whale River, 17.vi.1949 (J.R.Vockeroth) (CNCI). Paratype: CANADA: Québec: ♀, Great Whale River, 16.vii.1949 (J.R.Vockeroth) (CNCI).
Additional material. UNITED STATES: Alaska: ♂, Sitka (Holmberg) (FMNH); New Hampshire: Coos Co.: 2♂♂, ♀, Mt. Washington, 3800’, 16.viii.1976 (J.M. & B.A.Campbell) (CNCI, SPSU).
Diagnosis. See Lohse et al. 1990 (as Boreostiba hudsonica Lohse, 1990).
Discussion. The types of At. parvipennis and Boreostiba hudsonica are similar in external characters and the shape of the aedeagus and spermatheca. The two names are considered to be synonyms.
The generic placement of this species is considered below (See Discussion for Boreostiba).
Distribution. Atheta parvipennis is known from Alaska, Alberta, Québec and New Hampshire.