Agriotes Eschscholtz, 1829 .

The North American fauna of Agriotes is relatively well known at the species level (Becker 1956), but global generic concepts are in a confused and overlapping state. Since Becker’s revision in 1956, Gurjeva (1972) resurrected and expanded the concept of the genus Ectinus Eschscholtz ( Agriotes limosus species-group of Becker 1956) and moved some species to the genus Dalopius Eschscholtz, 1829 ( Agriotes criddlei species-group of Becker 1956) (Fuller 1994). We follow Becker’s concept of the genus due to poor support for splitting the genus, as well as the drastic change to the concept of Dalopius with the inclusion of the A. criddlei species-group. The record of Agriotes lineatus (Linnaeus) in Seibert (1993) is a misidentification of Agriotes mancus (Say), and the former species is removed from this Montana checklist.