Amphasia Newman, 1838

Bousquet, Yves, 2012, Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico, ZooKeys 245, pp. 1-1722 : 654-655

Genus Amphasia Newman, 1838

Amphasia Newman, 1838a: 388. Type species: Amphasia fulvicollis Newman, 1838 (= Feronia interstitialis Say, 1823) by monotypy. Etymology. From the Greek amphi (double) and phasis (appearance), probably alluding to the presence in the adults of character states found in two related genera ("apparently partaking of the characters of Harpalus and Mazoreus ") [feminine]. According to Duponchel (1840b: 374), the name Amphasia derives from the Greek amphi (around, on both sides) and asis (slime, mud, by extension marsh); there is no evidence in Newman (1838) pointing to that interpretation.

Diversity.

Two North American species arrayed in two subgenera.

Identification.

Lindroth (1968: 860-861) covered both species in his treatment of the genus Anisodactylus .

Taxonomic Note.

Lindroth (1968: 860) regarded this taxon as a subgenus of Anisodactylus while Noonan (1973: 347) treated it as a valid genus. Larval characters support Noonan’s view (Bousquet and Tchang 1992: Fig. 42).