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).