Diplocheila Brulle , 1835

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 626

Genus Diplocheila Brulle, 1835

Rembus W.S. Macleay, 1825: 16 [junior homonym of Rembus Germar, 1824]. Type species: Carabus impressus Fabricius, 1798 (= Rembus daldorfi Crotch, 1871) designated by Westwood (1838: 5). Etymology. Uncertain, possibly from the Greek rhembo (turn, revolve, roll) [masculine]. Note. This taxon was made available also by Lepeletier and Audinet-Serville [in Latreille et al.] the same year but the work of Latreille et al. was issued in October 1825 (Evenhuis 1997a: 228) while that of Macleay in July 1825 (Evenhuis 1997b: 507).

Diplocheila Brullé, 1835a: 407. Replacement name for Rembus Macleay, 1825. Etymology (original). From the Greek diplo (double) and cheilos (lip), alluding to the markedly emarginate labrum (" lèvre supérieure... presque divisée en deux parties ") of the adult [feminine].

Diplochila Agassiz, 1846: 125. Unjustified emendation of Diplocheila Brullé, 1835.

Rhembus Agassiz, 1846: 322, 323. Unjustified emendation of Rembus Macleay, 1825.

Distribution.

Twenty-nine species in the boreal, temperate, and tropical areas of the Nearctic (nine species), Oriental (12 species), Palaearctic (nine species), and Afrotropical (two species) Regions. The species are placed in three subgenera: Diplocheila (nine Oriental and one east Palaearctic species), Isorembus (18 species), and Neorembus Ball (one Asian species).

Identification.

Ball (1959) revised the species of this genus. Since this publication, one new North American species has been described by Will (1998) and a few nomenclatural changes affecting the Nearctic species have been introduced by Lindroth (1968-1969a): Ball’s Diplocheila modesta corresponds to Diplocheila assimilis and his Diplocheila assimilis to Diplocheila impressicollis . Lindroth’s (1968: 940-941) key encompasses seven North American species.