Tanystoma Motschulsky, 1845

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 743

Genus Tanystoma Motschulsky, 1845

Tanystoma Motschulsky, 1845b: 341. Type species: Anchomenus striatus Dejean, 1828 by original designation. Etymology. From the Greek tanyo (long) and stoma (mouth) [neuter].

Tanystola Motschulsky, 1850a: 69. Unnecessary replacement name for Tanystoma Motschulsky, 1845.

Leucagonum Casey, 1920: 99. Type species: Agonum maculicolle Dejean, 1828 designated by Bousquet and Larochelle (1993: 252). Synonymy established by Liebherr (1985: 1184). Etymology. From the Greek leucos (white) and the generic name Agonum [q.v.], probably alluding to the color ("color pale flavo-testaceous") of the adults [neuter].

Diversity.

Five species in western North America (four species) and the Baja California Peninsula and Guadalupe Island in Mexico (two species, one of them endemic).

Identification.

Liebherr (1985) revised the species. Subsequently he described a new species, the endemic Baja Californian Tanystoma diabolicum , and provided a key to all species (Liebherr 1989).

Taxonomic Note.

According to Liebherr (1989: 184), the genus Rhadine is the sister-group of Tanystoma .