Shattuck, 1994: 9; Bolton, 1995b: 77; Fisher & Bolton, 2016: 209 (checklist).
Shattuck, 1991: 105 (diagnosis, all species revision, key); Shattuck, 1992c: 42 (diagnosis, review of genus); Snelling, 2007: 554 (all species, key); Fisher & Bolton, 2016: 208 (diagnosis); Cantone, 2017: 112 (brief male diagnosis).
Extant: 21 valid species (1 synonym)