Rhizosomichthys Miles [C.] 1943:369 Masc. Pygidium totae Miles 1942. Type by original designation (also monotypic). •Valid as Rhizosomichthys Miles 1943 -- (de Pinna 1989:31 [ref. 12630], Arratia 1990:398 [ref. 16581], Arratia 1998:366 [ref. 23661], Fernández & Bichuette 2002:278 [ref. 26539] as Rhizosomichthiys, de Pinna & Wosiacki in Reis et al. 2003:278 [ref. 27061], Ferraris 2007:412 [ref. 29155], Schaefer & Fernández 2009:510 [ref. 30382], Sarmento-Soares et al. 2011:268 [ref. 31385], Fernández et al. 2011:227 [ref. 31662], Datovo et al. 2012:40 [ref. 31994], Lezuma et al. 2012:60 [ref. 32020]). Current status: Valid as Rhizosomichthys Miles 1943. Trichomycteridae: Trichomycterinae.