Emery, 1925d: 223; Chapman & Capco, 1951: 214; Bolton, 1995b: 189.
Emery, 1925d: 223 (diagnosis); Bolton, 1994: 50 (synoptic classification); Bolton, 1995a: 1049 (census); LaPolla, 2009: 6 (diagnosis, all species revision, key); LaPolla et al., 2010a: 124 (diagnosis, synopsis); Cantone, 2017: 156 (brief male diagnosis).
Extant: 8 valid species
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