titthos, Phalloceros Lucinda [P. H. F.] 2008:133, Figs. 25-26, 53 [Neotropical Ichthyology v. 6 (no. 2); ref. 29669] Creek near beach, ca. 25°53'S, 48°37'W, Guaratuba, Paraná, Brazil. Holotype: MZUSP 79670. Paratypes: MZUSP 43467 (26, 3 c&s). Plus non-types: USNM 297945 (13, 2 c&s). •Valid as Phalloceros titthos Lucinda 2008 -- (Meyer 2015:190 [ref. 34698], Huber 2019:90 [ref. 36941], Reis et al. 2020:474 [ref. 38364]). Current status: Valid as Phalloceros titthos Lucinda 2008. Poeciliidae: Poeciliinae. Distribution: South America: Coastal drainages flowing to Guaratuba Bay and Paranaguá Bay, southeastern Mata Atlantica (Paraná State, Brazil). Habitat: freshwater.