Emery, 1924f: 342; Kempf, 1972b: 144; Bolton, 1995b: 268.
Emery, 1924f: 342 (diagnosis); Kempf, 1960d: 279 (review of genus, key); Bolton, 1994: 105 (synoptic classification); Bolton, 1995a: 1050 (census); Mayhé-Nunes, 1995: 197 (review of genus); Mayhé-Nunes & Brandão, 2006: 464 (all species revision, key); Baccaro et al., 2015: 236 (genus in Brazil); Cantone, 2017: 213 (brief male diagnosis); Fernández & Serna, 2019: 859 (Colombia species).
Extant: 4 valid species
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