Trechus (Microtrechus), Jeannel, 1927

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 338

Subgenus Microtrechus Jeannel, 1927

Microtrechus Jeannel, 1927: 585. Type species: Microtrechus vandykei Jeannel, 1927 by original designation. Etymology. From the Greek micros (small, little) and the generic name Trechus [q.v.], alluding to the small size of adults of these Trechus species [masculine].

Diversity.

Forty-one species (46 species-group taxa) restricted to the Appalachian Mountains in North Carolina, Tennessee, South Carolina, and Georgia and currently placed in three species groups.

Identification.

Barr (1979b) revised and provided a key to the species of this subgenus (22 species, 29 species-group taxa). Subsequently, 15 new species and two subspecies have been described by Barr (1985b), Dajoz (2005), and Donabauer (2005a, b).