Wheeler, 1922: 887; Emery, 1924f: 225; Bolton, 1995b: 171; Fisher & Bolton, 2016: 261 (checklist).
Arnold, 1917: 362 (diagnosis); Emery, 1924f: 225 (diagnosis); Bolton, 1981a: 56 (diagnosis, all species revision, key); Bolton, 1995a: 1049 (census); Fisher & Bolton, 2016: 260 (diagnosis); Ramamonjisoa et al., 2024: 334 (Malagasy region male diagnosis).
Extant: 2 valid species (1 synonym, 3 obsolete combinations)