paucerna, Corydoras Knaack [J.] 2004:57, Figs. 1-5 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Río Paragua, río Itenez system, Provincia J.M. Velasco, Departamento Santa Cruz, Bolivia, 13°34.384'S, 62°03.067'W. Holotype: MTD F 28466. Paratypes: CAS 219131 (2); CIRA-UTB 1080 (2); CJK uncat. (135); MTD F 28467 (1); ZMA 123.1000.732 (2); ZMB 33528 (1), 33529 (1). Type catalog: Ferraris 2007:122 [ref. 29155]. •Valid as Corydoras paucerna Knaack 2004 -- (Ferraris 2007:122 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus paucerna (Knaack 2004). Callichthyidae: Corydoradinae. Distribution: South America: Itenez River drainage, western Amazon basin, Bolivia. Habitat: freshwater.