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 Pseudaptinus Laporte, 1834 Diaphorus Dejean, 1831: 300 [junior homonym of Diaphorus Meigen, 1824]. Type species: Diaphorus lecontei Dejean, 1831 by monotypy. Etymology (original). From the Greek diaphoros (different) [masculine]. Pseudaptinus Laporte, 1834: 56. Type species: Polistichus albicornis Klug, 1834 by monotypy. Synonymy established by Laporte (1840: 33). Etymology. From the Greek pseudos (fallacy, lie) and the generic name Aptinus [ q.v .], alluding to the resemblance of the adults to those of Aptinus pigmaeus (" le petit insecte sur lequel je forme ce genre a le facies de l'Aptinus Pigmaeus ") [masculine]. Tiphys Gistel, 1848a: ix [junior homonym of Tiphys Koch, 1837]. Replacement name for Diaphorus Dejean, 1831. Diversity. About 55 species in temperate, subtropical, and tropical areas of the Nearctic (12 species but only four endemic), Neotropical (about 40 species), and Australian (nine species in Australia) Regions.