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 Pentagonica Schmidt-Goebel , 1846 Rhombodera Reiche, 1842: 313 [junior homonym of Rhombodera Burmeister, 1838]. Type species: Rhombodera virgata Reiche, 1842 (= Lebia trivittata Dejean, 1831) designated by Bousquet and Larochelle (1993: 245). Etymology. From the Greek rhombos (lozenge) and dere (neck, by extension pronotum), alluding to the shape of the pronotum (" thorax sub rhomboideus ") of the adult [feminine]. Pentagonica Schmidt-Goebel , 1846: 47. Type species: Pentagonica ruficollis Schmidt-Goebel , 1846 designated by Andrewes (1938: 137). Synonymy established by Chaudoir (1877: 212). Etymology (original). From the Greek pente (five) and goniakos (angular), not gonichos as originally cited by Schmidt-Goebel , alluding to the shape of the pronotum (" thorax pentagonus ") of the adult [feminine]. Didetus LeConte, 1853c: 377. Type species: Didetus flavipes LeConte, 1853 by monotypy. Synonymy established by LeConte (1861a: 25). Etymology. From the Greek prefix di - (two) and detos (bound) [masculine]. Diversity. About 85 species in the temperate, subtropical, and tropical areas of the Nearctic (six species, only one endemic), Neotropical (about 25 species), Australian (10 species), Oriental (about 20 species), Palaearctic (11 Asian species), and Afrotropical (25 species) Regions. Identification. Lindroth's (1969a: 1013) key covered all North American known at the time. Two new species have been described subsequently by Bell (1987) and Mateu (1995).