maculatus, Stegophilus Steindachner [F.] 1879:32 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 16 (no. 4); ref. 20480] La Plata, Province of Buenos Aires, Argentina. Holotype (unique): NMW 57222. Type catalog: Ferraris 2007:410 [ref. 29155]. Species later illustrated and described in more detail in Steindachner 1879:25, Pl. 4 (fig. 2) [ref. 4228]. •Valid species, in genus Parastegophilus or Homodiaetus -- (Burgess 1989:324 [ref. 12860]). •Valid as Homodiaetus maculatus (Steindachner 1879) -- (Gómez & Chebez 1996:61 [ref. 23791], Haro et al. 1996:6 [ref. 25004], Nión et al. 2016:30 [ref. 35565]). •Valid as Parastegophilus maculatus (Steindachner 1879) -- (de Pinna & Wosiacki in Reis et al. 2003:276 [ref. 27061], López et al. 2003:41 [ref. 27366], Ferraris 2007:410 [ref. 29155], Litz & Koerber 2014:22 [ref. 33622], Sarmiento et al. 2014:192 [ref. 35004], Fernández et al. 2015:13 [ref. 35041], Mirande & Koerber 2015:36 [ref. 35117]). •Valid as Pseudostegophilus maculatus (Steindachner 1879) -- (Britski et al. 1999:93 [ref. 24147], Menni 2004:82 [ref. 28131], DoNascimiento 2015:950 [ref. 34078], Bertaco et al. 2016:421 [ref. 34561], Koerber & Litz 2016:4 [ref. 35098], Koerber et al. 2017:5 [ref. 35083], Koerber et al. 2017:54 [ref. 35267], Koerber et al. 2017:6 [ref. 35632], Koerber et al. 2019:6 [ref. 36736], Koerber et al. 2020:5 [ref. 37480], Mirande & Koerber 2020:2 [ref. 37594], Ferrer 2021:222 [ref. 38890], Koerber et al. 2021:6 [ref. 38894], Koerber et al. 2023:6 [ref. 40355], Loureiro et al. 2023:90 [ref. 40506]). Current status: Valid as Pseudostegophilus maculatus (Steindachner 1879). Trichomycteridae: Stegophilinae. Distribution: South America: lower Paraná and Uruguay River basins (Argentina, Paraguay, Uruguay and Bolivia). Habitat: freshwater.