Wheeler, 1922: 1032; Emery, 1924f: 291; Bolton, 1995b: 190; Fisher & Bolton, 2016: 282 (checklist).
Emery, 1924f: 291 (diagnosis); Kugler, 1979b: 255 (sting structure); Bolton, 1995a: 1049 (census); Bolton & Fisher, 2014: 9 (diagnosis, all species revision, key); Fisher & Bolton, 2016: 280 (diagnosis); Cantone, 2017: 201 (brief male diagnosis); Ramamonjisoa et al., 2024: 335 (Malagasy region male diagnosis).
Extant: 3 valid species