Sagamia Jordan [D. S.] & Snyder [J. O.] 1901:100 Fem. Sagamia russula Jordan & Snyder 1901. Type by original designation (also monotypic). •Synonym of Acanthogobius Gill 1859 -- (Lindberg & Krasyukova 1975:363 [ref. 7348]). •Valid as Sagamia Jordan & Snyder 1901 -- (Lindberg & Krasyukova 1975:394 [ref. 7348], Akihito in Masuda et al. 1984:279 [ref. 6441], Birdsong et al. 1988:184 [ref. 7303], Pezold 2011:94 [ref. 31727], Parenti 2021:288 [ref. 38603]). Current status: Valid as Sagamia Jordan & Snyder 1901. Oxudercidae: Gobionellinae.