Taxonomy on BugGuide is stated incorrectly. Pérez-Hernández et. al. (2019) did not alter the rank of Neolycus, still a subgenus.

Lycostomus Motschulsky, 1861, is granted full status. However, insofar American species are concerned, historically all workers pointed out that the division is poorly defined. Prefer to keep anything in Lycus, therefore.

Neolycus (type: schoenherri Chevrolat, 1834) contains the more dilated species; Lycus arizonensis Green, 1949, and L. fuliginosus Gorham, 1880 may only figure as "Lycus (Lycus)" in Pérez-Hernández et. al., because they have never been combined previously with Neolycus.