Bembidion (Peryphus), Dejean, 1821

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 365

Subgenus Peryphus Dejean, 1821

Peryphus Dejean, 1821: 17. Type species: Carabus littoralis Olivier, 1795 (= Bembidium tetracolum Say, 1823) designated by Westwood (1838: 7). Etymology. Possibly from the Greek peri (very) and phos (light, by extension bright, clear) [masculine]. The name was proposed by Johann Karl Megerle von Mühlfeld and made available by Dejean.

Diversity.

About 65 species in the Nearctic (21 species, three of them adventive), Neotropical (four species in Middle America shared with North America), Palaearctic (about 50 species), and Afrotropical (one species in Ethiopia, Bembidion scottustulatum Netolitzky) Regions. Three species ( Bembidion dauricum , Bembidion obscurellum and Bembidion petrosum ) are Holarctic.

Identification.

Lindroth (1963b: 330-342, as tetracolum, transversale, striola, and in part grapei groups) covered all but six ( Bembidion lugubre , Bembidion pernotum , Bembidion mexicanum , Bembidion perspicuum , Bembidion sarpedon , and Bembidion femoratum ) of the species found in North America. Maddison and Swanson (2010: 26-29) briefly discussed the status of each species of the transversale group but did not include a key to separate all species.