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 affinis Fall, 1901 Dyschirius affinis Fall, 1901a: 209. Type locality: "Massachusetts, eastern New York" (original citation). Syntype(s) in MCZ [# 23848]. Dyschirius duplicatus Fall, 1901a: 209. Type locality: "Luling and El Paso, Texas" (original citation). Syntype(s) in MCZ [# 23851]. Synonymy established by Bousquet (1988a: 372). Distribution. This species ranges from Maine (Larochelle and Lariviere 1990a: 28; Androscoggin County, CNC) to southeastern Montana (Herman 1986: 62), south to westernmost (Fall 1901a: 209, as Dyschirius duplicatus ) and southern Texas (Cameron, San Patricio, and Zapata Counties, CMNH, MCZ) and Maryland (Erwin 1981b: 140). The record from "Arizona" (Bousquet and Larochelle 1993: 98) needs confirmation. Records. CAN : ON, QC USA : AR, CO, CT, DC, IA, IL, IN, KS, MA, MD, ME, MT, ND, NE, NH, NM, NY, OH, OK, PA, TN, TX, VA, VT, WI, WY [AZ]