Peryphanes (Testediolum), Ganglbauer, 1891

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 382

Subgenus Testediolum Ganglbauer, 1891

Testediolum Ganglbauer, 1891a: 153. Type species: Bembidium glaciale Heer, 1837 designated by Jeannel (1941a: 97). Etymology. From the generic name Testedium and the Latin suffix - olum (small, little) [neuter].

Peryphidium Tschitschérine, 1895: 233. Type species: Bembidium tjanschanicum Tschitschérine, 1895 (= Bembidion kokandicum Solsky, 1874) by monotypy. Synonymy established by Netolitzky (1921: 210). Etymology. From the generic name Peryphus [q.v.] and the Latin suffix - idium (small, little) [neuter].

Diversity.

Northern Hemisphere, with 24 species in the Nearctic (6 species) and Palaearctic (18 species) Regions arrayed in three species groups, two of these groups being exclusively Eurasian. One species from India, Bembidion braminum Andrewes, is usually also included in this subgenus (see Lorenz 2005: 234) but its taxonomic position should be reevaluated.

Identification.

Lindroth (1963b: 312-314, as nebraskense group) covered all but two species ( Bembidion modocianum and Bembidion perbrevicolle ) described by Casey.