Emery, 1925d: 12; Kempf, 1972b: 128; Bolton, 1995b: 220.
Emery, 1922g: 91 (species key); Emery, 1925d: 12 (diagnosis); Kusnezov, 1956a: 31 (Argentina species key); Snelling & Hunt, 1976: 104 (all species key); Bolton, 1994: 50 (synoptic classification); Bolton, 1995a: 1050 (census); Cantone, 2017: 158 (brief male diagnosis).
Extant: 6 valid species (9 synonyms, 1 homonym), 0 valid subspecies (1 synonym)