Trigonotoma Dejean, 1828

Zhu, Pingzhou, Shi, Hongliang & Liang, Hongbin, 2020, Notes on the genus Trigonotoma from China, with descriptions of two new species (Carabidae, Pterostichinae), ZooKeys 921, pp. 49-64 : 49

Genus Trigonotoma Dejean, 1828

Type species.

Trigonotoma viridicollis Dejean, 1828 [= Trigonotoma indica Brullé 1834]

Diagnosis.

Among the six genera ( Trigonotoma Dejean, 1828, Lesticus Dejean, 1828, Euryaptus Bates, 1892, Nesites Andrews, 1931, Pareuryaptus Dubault, Lassalle & Roux, 2008, and Leiolesticus Roux, Lassalle & Dubault, 2016) of Trigonotomina , Trigonotoma can be distinguished from others in the subtribe by the following character combinations: first antennomere (scape) longer than the lengths of the 2nd, 3rd, and 4th antennomeres combined; apex of labrum emarginate, with six setae equidistantly placed; mentum notably shortened; parascutellar striae present; third elytral interval without setigerous pore; posterior margin of sternite VII with four setae in females. Detailed descriptions and distributions have recently been provided ( Roux et al. 2016).