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 Genus Elaphrus Fabricius, 1775 Elaphrus Fabricius, 1775: 227. Type species: Cicindela riparia Linnaeus, 1758 designated by Latreille (1810: 425). Etymology. From the Greek elaphros (nimble), probably alluding to the agility of the adults in the field [masculine]. Diversity. Thirty-nine species in the arctic, subarctic, boreal, and temperate areas of North America (19 species) and Eurasia (24 species). These species are arrayed in five subgenera, all but Sinoelaphrus Shi and Liang (one species in northern China) represented in North America. Four species are Holarctic. Identification. Goulet (1983) revised the species then known and provided a key for their identification.