Emery, 1911e: 96; Taylor & Brown, 1985: 36; Taylor, 1987a: 50; Bolton, 1995b: 300.
Emery, 1911e: 96 (diagnosis); Wheeler, 1916a: 46 (diagnosis, species); Emery, 1919c: 104 (notes); Brown, 1960a: 178, 180 (review of genus, key); Bolton, 1995a: 1051 (census); Shattuck, 1999: 195 (synopsis); Ward & Fisher, 2016: 689 (phylogeny); Cantone, 2017: 106 (brief male diagnosis); Heterick, 2021: 37 (Western Australia species key).
Extant: 4 valid species