Emery, 1924f: 314; Kempf, 1972b: 242; Bolton, 1995b: 392.
Emery, 1924f: 314 (diagnosis); Diniz, 1990: 277 (review, all species key); Bolton, 1995a: 1052 (census); Bolton, 2003: 70, 254 (diagnosis, synopsis); Feitosa et al., 2008: 68 (all species revision, key); Baccaro et al., 2015: 302 (genus in Brazil); Cantone, 2017: 237 (brief male diagnosis); Fernández & Serna, 2019: 817 (Colombia species).
Extant: 5 valid species