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 Apristus Chaudoir, 1846 Apristus Chaudoir [in Chaudoir and Hochhuth], 1846: 62. Type species: Apristus subaeneus Chaudoir, 1846 by monotypy. Etymology (original). From the Greek a ( absence) and prizos (saw-like), alluding to the smooth (i.e., not denticulate) tarsal claws (" crochets des tarses non denteles ") of the adults [masculine]. Diversity. About 60 species (Lorenz 2005: 472) in the Nearctic (13 species), Neotropical (five species in Middle America and the West Indies), Australian, Oriental, Palaearctic (27 species), and Afrotropical Regions. Identification. Casey (1920: 272-276) wrote a key to all but one ( Apristus latens ) North American species. As usual his key is difficult to use. Ten of the current 13 species in North America have been described by Casey (1920) and only two ( Apristus constrictus and Apristus pugetanus ) have been study subsequently (Lindroth 1969a). A taxonomic revision of the genus is needed.