Piabarchus Myers [G. S.] 1928:90 Masc. Piabina analis Eigenmann 1914. Type by original designation (also monotypic). •Valid as Piabarchus Myers 1928 -- (Géry 1977:395 [ref. 1597], Mahnert & Géry 1988:1 [ref. 6407], Britski et al. 1999:36 [ref. 24147] as Piabarcus, Almirón et al. 2001:38 [ref. 26609], Lima in Reis et al. 2003:153 [ref. 27061], Mirande 2009:8 [ref. 30267] and Mirande 2010:533 [ref. 31006] in Characidae, Stevardiinae with question, Oliveira et al. 2011:16 [ref. 31685], Thomaz et al. 2015:8 [ref. 33893] in Stevardiinae, tribe Diapomini, Bertaco et al. 2016:414 [ref. 34561], Melo et al. 2024:11 [ref. 41541] in Diapominae). Current status: Valid as Piabarchus Myers 1928. Stevardiidae: Diapominae.