brevispina, Poptella Reis [R. E.] 1989:37, Fig. 22 [Comunicações do Museu de Ciências da PUCRS, Série Zoologia v. 2 (no. 6); ref. 14219] Igarapé Apeu, Boa Vista, Castanhal, Pará, Brazil. Holotype: MZUSP 38562. Paratypes: ANSP (1); BMNH 1911.10.31.416 (1), 1973.10.15.28-29 (2), 1974.5.22.458-460 (3); CAS 66873-74 (5, 3); FMNH 7475 (1), 53469 (5), 53716 (4), 82627 (3); MCP 13526 (3); MCZ 46050 (6); MZUSP 19362 (10), 19368 (1), 19527 (3), 19544 (15, not 13), 19675 (11, not 10), 20339 (2), 20568 (10); CAS-SU 21859 (1), 21867 (1); UMMZ 215339-42 (1, 1, 3, 3); USNM; ZMA. Plus additional paratypes at MCP, MCZ, MZUSP. Type catalog: Oyakawa 1996:490-491 [ref. 23140]. •Valid as Poptella brevispina Reis 1989 -- (Géry et al. 1991:60 [ref. 21021], Planquette et al. 1996:236 [ref. 22818], Reis in Reis et al. 2003:210 [ref. 27061], Melo et al. 2016:133 [ref. 34701], DoNascimiento et al. 2017:46 [ref. 35633], Garcia-Ayala et al. 2017:571 [ref. 35695], Garcia-Ayala & Benine 2019:7 [ref. 36770], Garcia-Ayala & Benine 2021:7 [ref. 38089], Taphorn et al. 2022:19 [ref. 41297]). Current status: Valid as Poptella brevispina Reis 1989. Acestrorhamphidae: Stethaprioninae. Distribution: South America: Orinoco, Kurobrong, Oiapoque and Xingu River basins (Brazil, Colombia, French Guiana, Guyana and Suriname). Habitat: freshwater.