stigmaturus, Distoechus Gomes [A. L.] 1947:13, Fig. 2; Pl. 1 (fig. 2) [Miscellaneous Publications, Museum of Zoology, University of Michigan No. 67; ref. 1830] Backwater of Rio Maquiné, Conceiçao do Arroio County, Rio Grande do Sul, Brazil. Holotype: UMMZ 143273. Paratypes: CAS-SU 40187 (1), UMMZ 143274 (orig. 7, now 6), USNM 143846 [ex UMMZ 143274] (1). Type catalog: Böhlke 1953:24 [ref. 12291], Vari & Howe 1991:20 [ref. 19022]. •Valid as Deuterodon stigmaturus (Gomes 1947) -- (Lucena & Lucena 1992:145 [ref. 21970], Lucena & Lucena 2002:129 [ref. 26205], Lucena et al. in Reis et al. 2003:127 [ref. 27061], Bertaco et al. 2016:413 [ref. 34561]). Current status: Valid as Deuterodon stigmaturus (Gomes 1947). Acestrorhamphidae: Stygichthyinae. Distribution: Brazil. Habitat: freshwater.