Diaphorus (Thalpius), LeConte, 1851

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 838

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 .