Trigonognatha Motschulsky, 1857

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 503

Subgenus Trigonognatha Motschulsky, 1857

Trigonognatha Motschulsky, 1857a: 25. Type species: Trigonognatha cuprescens Motschulsky, 1857 by monotypy. Etymology. From the Greek trigonos (triangular) and gnathos (jaw), alluding to the triangular mandibles (" mandibules triangulaires ") of the adult [feminine].

Aurisma Fairmaire, 1889: 9. Type species: Aurisma delavayi Fairmaire, 1889 by monotypy. Synonymy established by Tschitschérine (1898a: 77).

Neomyas Allen, 1980: 17. Type species: Myas cyanescens Dejean, 1828 by original designation. Synonymy established by Bousquet (1999: 90). Etymology. From the Greek prefix neo - (new) and the generic name Myas [q.v.] [masculine].

Diversity.

Thirty-one species (Lorenz 2005: 266) in eastern North America (two species) and eastern Asia (29 species).

Identification.

Allen (1980) revised the North American under the generic name Neomyas . Lindroth (1966) redescribed both species.