Emery, 1925d: 59; Bolton, 1995b: 301.
Emery, 1925d: 59 (diagnosis); Bolton, 1994: 50 (synoptic classification); Bolton, 2003: 122 (synopsis); Cantone, 2017: 167 (brief male diagnosis); Ward & Boudinot, 2021: 50 (male identification); Klimeš et al., 2022: 562 (worker diagnosis), 572 (phylogeny).
Extant: 3 valid species