Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico Author Bousquet, Yves Agriculture and Agri-Food Canada, Central Experimental Farm, Ottawa, Ontario, Canada bousquety1@yahoo.com text ZooKeys 2012 2012-11-28 245 1 1722 http://dx.doi.org/10.3897/zookeys.245.3416 journal article http://dx.doi.org/10.3897/zookeys.245.3416 1313-2970-245-1 FFFF52503A0AFF882450FFB66D45FF8E 578462 Dyschirius montanus LeConte, 1879 Dyschirius montanus LeConte, 1879d: 507. Type locality: "[Fort] Garland [Costilla County], Colo[rado]" (original citation). Two syntypes in MCZ [# 699]. Dyschirius thompsoni Hatch, 1949b: 117. Type locality: "Condon [Gilliam County], Oregon" (original citation). Holotype (♀) in USNM. Synonymy established by Hatch (1953: 68), confirmed by Lindroth (1961a: 141). Distribution. This species ranges from southern Quebec (Larochelle 1975: 82) to south-central British Columbia (Lindroth 1961a: 141), south to the Sierra Nevada in California (Dajoz 2004: 119), southeastern Arizona (Graham County, CNC), south-central Colorado (Wickham 1902: 232), Nebraska (Clopton 1991: 61), Wisconsin (Messer 2010: 34), and "Michigan" (Garry A. Dunn pers. comm. 1986). One old specimen simply labeled from New Mexico is known (Fall and Cockerell 1907: 156). Records. CAN : AB, BC, MB, ON, QC, SK USA : AZ, CA, CO, MI, MN, NE, NV, OR, SD, WA, WI, WY [NM]