pterostictum, Characidium Gomes [A. L.] 1947:18, Pl. 1 (fig. 3) [Miscellaneous Publications, Museum of Zoology, University of Michigan No. 67; ref. 1830] Rio Maquiné, tributary to Lagôa dos Quadros, Conceição do Arroio County, Rio Grande do Sul, Brazil. Holotype: UMMZ 143289. Paratypes: UMMZ 143290 (orig. 8, now 7), USNM 143848 [ex UMMZ 143290] (1). Type catalog: Vari & Howe 1991:12 [ref. 19022]. •Valid as Characidium pterostictum Gomes 1947 -- (Malabarba 1989:132 [ref. 14217], Buckup 1993:101 [ref. 20831], Buckup & Reis 1997:538 [ref. 22903], Buckup & Hahn 2000:151 [ref. 24257], Buckup et al. 2000:276 [ref. 25084], Buckup in Reis et al. 2003:90 [ref. 27061], López et al. 2003:16 [ref. 27366], Menni 2004:79 [ref. 28131], da Graça & Pavanelli 2008:55 [ref. 29583], Zanata & Camelier 2014:341 [ref. 33380], Litz & Koerber 2014:16 [ref. 33622], Casciotta et al. 2015:1 [ref. 33697], Melo & Oyakawa 2015:288 [ref. 33788], Zanata & Ohara 2015:375 [ref. 33970], Zanata & Camelier 2015:497 [ref. 33983], Zanata et al. 2015:381 [ref. 34023], Mirande & Koerber 2015:27 [ref. 35117], Bertaco et al. 2016:414 [ref. 34561], Nión et al. 2016:27 [ref. 35565], Zanata et al. 2018:84 [ref. 36279], Flausino Junior et al. 2020:357 [ref. 37666], Reis et al. 2020:461 [ref. 38364], Loureiro et al. 2023:32 [ref. 40506], Koerber 2024:2 [ref. 41228], Stabile et al. 2024:10 [ref. 41591]). Current status: Valid as Characidium pterostictum Gomes 1947. Crenuchidae: Characidiinae. Distribution: South America: coastal basins from Ribeira de Iguapé River to Uruguay River basin (Brazil, Paraguay, Uruguay and Argentina). Habitat: freshwater.