Tachys (Paratachys), Casey, 1918

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 451

Subgenus Paratachys Casey, 1918

Paratachys Casey, 1918: 174. Type species: Paratachys austinicus Casey, 1918 by original designation. Etymology. From the Greek para (near, next to) and the generic name Tachys [q.v.] [masculine].

Eotachys Jeannel, 1941b: 424, 426. Type species: Elaphrus bistriatus Duftschmid, 1812 by original designation. Synonymy established by Erwin (1971: 236). Etymology. From the Greek eos (dawn, east) and the generic name Tachys [q.v.] [masculine].

Macrotachys Kult, 1961: 2 [junior homonym of Macrotachys Uéno, 1953]. Type species: Bembidium fulvicolle Dejean, 1831 by original designation. Synonymy established, under the name Eotachys Jeannel, by Lindroth (1966: 431). Etymology. From the Greek macros (long) and the generic name Tachys [q.v.] [masculine].

Diversity.

Worldwide, with about 145 species in the Nearctic (20 species), Neotropical (about 35 species), Australian (about 15 species), Oriental, Palaearctic (about 30 species), and Afrotropical Regions. Erwin (1974a: 126) stated that the number of New World species known to him is over 300.

Identification.

Lindroth (1966: 431-436) treated six and Hayward (1900: 224-232) 11 (ten in the key) of the 20 species found in North America. A revision of the group is needed.