Patrobus fossifrons (Eschscholtz, 1823)

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 466

Patrobus fossifrons (Eschscholtz, 1823)

Platysma fossifrons Eschscholtz, 1823: 104. Type locality: "Kamtschatka [Russia] et Unalaschka [Alaska]" (original citation), restricted to «Unalaska» by Darlington (1938: 162). Syntype(s) in ZMH (Silfverberg 1987: 16) and probably also in ZMMU (Lindroth 1961a: 181). Note. This species was also made available the same year by an illustration in Fischer von Waldheim (1823: plate 19, figure 4).

Patrobus longiventris Mannerheim, 1853: 145. Type locality: "in ora orientali insulae Kadjak [Alaska]" (original citation). Lectotype (♀), designated by Lindroth (1961a: 181), in ZMH. Synonymy established by Darlington (1938: 161), confirmed by Lindroth (1961a: 181).

Patrobus fulvus Mannerheim, 1853: 145. Type locality: "insula Kadjak [Alaska]" (original citation). Lectotype (♂), designated by Lindroth (1961a: 181), in ZMH. Synonymy established, under the name Patrobus latiusculus Chaudoir, by Chaudoir (1872a: 46), confirmed by Lindroth (1961a: 181).

Patrobus latiusculus Chaudoir, 1872a: 46. Type locality: «côte orientale de l’île Kadjak près de la côte nord-ouest de l’Amérique [Alaska]; Orégon» (original citation), restricted to "Kodiak Island [Alaska]" by Darlington (1938: 162). Syntype(s) in MHNP. Synonymy established by Darlington (1938: 161).

Patrobus fossifrons dimorphicus Darlington, 1938: 161. Type locality: "near Victoria, Vancouver Island, British Columbia" (original citation). Holotype (♂) in MCZ [# 22983]. Synonymy established by Lindroth (1961a: 181).

Distribution.

This western species ranges from southeastern Alberta to Vancouver Island, north to the Gulf Coast of Alaska, including the Aleutian Islands (Lindroth 1961a: 181), south to Mono County in the Sierra Nevada (CAS) and mountains in southwestern Colorado (Darlington 1938: 162-163). The record from Kamchatka (Eschscholtz 1823: 104) is probably in error since the species is not listed from the Palaearctic Region by Zamotajlov (2003b: 284-285).

Records.

CAN: AB, BC (VCI) USA: AK, CA, CO, ID, MT, OR, UT, WA, WY

Note.

Pohl (1998) reported that members of this species can be segregated into a “coastal” and “inland” morphs and that hybridization occurs between the coastal form of Patrobus fossifrons and Patrobus stygicus .