Diacheila arctica amoena (Faldermann, 1835)

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 260-261

Diacheila arctica amoena (Faldermann, 1835)

Blethisa amoena Faldermann, 1835: 358. Type locality: "montibus Altaicis [Mongolia]" (original citation). Syntype(s) probably in ZILR.

Diachila subpolaris LeConte, 1863c: 2. Type locality: «Hudson’s Bay" (original citation). One syntype in CMNH (Lindroth 1954b: 121). Synonymy established by Lindroth (1954b: 122).

Diachila americana Motschulsky, 1864: 195. Type locality: «Amér [ique] arctique. Hudson Bay" (original citation). Syntype(s) location unknown (possibly in ZMMU though not listed in Keleinikova 1976). Synonymy established with the name Diachila subpolaris LeConte by Horn (1870a: 70).

Distribution.

This Holarctic subspecies is known in Asia from Kazakhstan, Mongolia, and eastern Siberia (Goulet 2003: 206) and in the Nearctic Region from a few localities in Alaska, Northwest Territories (Lindroth 1961a: 102), northern Alberta (Bourassa and Wood 2011: 144; Fort McMurray area, Gerald J. Hilchie pers. comm. 2009), and Labrador (Lindroth 1961a: 102). Fossil remnants, dated between 10,400 and 17,000 years B.P., have been unearthed in Cape Breton Island, Nova Scotia (Miller 1997: 250) and Iowa (Schwert 1992: 76).

Records.

CAN: AB, LB, NT USA: AK - Holarctic

Note.

The nominotypical subspecies is found in northern Europe and eastern Siberia.