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 Subgenus Thalpius LeConte, 1851 Thalpius LeConte, 1851: 174. Type species: Helluo pygmaeus Dejean, 1826 by monotypy. Etymology. Probably from the Greek thalpos (warmth, heat), possibly alluding to the climatic region where the sole species then known lived [masculine]. Enaphorus LeConte, 1851: 174. Type species: Enaphorus rufulus LeConte, 1851 by monotypy. Synonymy established by LeConte (1853c: 373). Zuphiosoma Laporte, 1867: 103. Type species: Zuphiosoma fulva Laporte, 1867 by monotypy. Synonymy established by Csiki (1932b: 1561). Etymology. From the generic name Zuphium [ q.v .] and the Greek soma (body) [neuter]. Diversity. Thirty-four species (Lorenz 2005: 505) in the Nearctic (nine species but only two endemic), Neotropical (23 species), and Australian (nine species in Australia) Regions. Identification. Messer (2011: 422-423) published a key to all species found in the United States and Mexico. Taxonomic Note. This taxon is considered as a distinct genus by some authors (e.g., Ball and Bousquet 2000: 115) but Baehr (1985: 36) found out that the character states between Thalpius and Pseudaptinus were "very few and rather weak." I am following him and treat Thalpius as a subgenus of Pseudaptinus .