Dicheirotrichus mannerheimii mannerheimii (Sahlberg, 1844)

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 677-678

Dicheirotrichus mannerheimii mannerheimii (Sahlberg, 1844)

Bradycellus mannerheimii R.F. Sahlberg, 1844: 51. Type locality: "montis Morikan [Okhotsk, Khabarovsk Kray, Siberia, Russia]" (original citation). One syntype in ZMH (Silfverberg 1987: 20).

Trichocellus porsildi Brown, 1932a: 3. Type locality: "Baker L[ake], N[orth]W[est] T[erritories]" (original citation). Holotype (♂) in CNC [# 3249]. Synonymy established by Lindroth (1968: 877). Etymology. The specific name was proposed in honor of the botanist Alf Erling Porsild [1901-1977] who collected some of the specimens of the type series. Born in Copenhagen, Porsild grew up on the University of Copenhagen Arctic Station in Qeqertarsuaq, Greenland. He settled in Ottawa where he held the position of curator at the National Museum of Canada in Ottawa between 1936 and 1945 and eventually head of the department of botany from 1945 to 1967. Mount Porsild in the Yukon Territory is named after him.

Distribution.

This Holarctic subspecies ranges from eastern Siberia (Jaeger and Kataev 2003: 402) to Labrador (Lindroth 1954d: 370); isolated at high altitude in Colorado (Lindroth 1968: 877). Fossil remnants from the Early Wisconsinan have been unearthed in southern Ontario (Morgan and Morgan 1981: 1108).

Records.

CAN: AB, BC, LB, MB, NT, QC, SK, YT USA: AK, CO - Holarctic

Note.

Two other subspecies, Dicheirotrichus mannerheimii oreophilus K. Daniel and J. Daniel and Dicheirotrichus mannerheimii ponojensis Sahlberg (synonym: Dicheirotrichus setiporus Reitter) are found in the Palaearctic Region.