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 Discoderus obsidianus Casey, 1914 Discoderus obsidianus Casey, 1914: 158. Type locality: "Arizona (probably southern)" (original citation). One syntype in USNM [# 47892]. Distribution. This species is known only from Cochise County in southeastern Arizona (UASM). Records. USA : AZ