Emery, 1925d: 45; Chapman & Capco, 1951: 208 (Asia); Bolton, 1995b: 145.
Emery, 1925d: 45 (diagnosis); Agosti, 1991: 293 (diagnosis, all species revision, key); Bolton, 1995a: 1048 (census); Agosti et al., 1999: 6 (all species revision, key); Cantone, 2017: 154 (brief male diagnosis).
Extant: 13 valid species (2 synonyms)