ater, Oligopus Risso [A.] 1810:142, Pl. 11 (fig. 41) [Ichthyologie de Nice; ref. 3755] Gulf of Saint-Hospice, Nice, France, northwestern Mediterranean Sea. No types known. •Valid as Oligopus ater Risso 1810 -- (Nielsen 1973:552 [ref. 6885], Cohen & Nielsen 1978:49 [ref. 881], Nielsen in Whitehead et al. 1986:1152 [ref. 13677], Arruda 1997:109 [ref. 24952]) but see generic account of Oligopus and Grammonus, Lipej & Dulčić 2010:32 [ref. 36649]. •Valid as Grammonus ater (Risso 1810) -- (Nielsen & Cohen in Nielsen et al. 1999:104 [ref. 24448], Nielsen & Cohen 2004:85 [ref. 28073], Nielsen 2007:375 [ref. 29358], Randall & Hughes 2008:143 [ref. 29910], Nielsen & Prokofiev 2010:189 [ref. 30790], Møller et al. 2016:Appendix A [ref. 34432] in Bythitidae, Nielsen 2016:1954 [ref. 34583], Carneiro et al. 2019:161 [ref. 37250], Kovačić et al. 2020:20 [ref. 37519], Iglésias et al. 2021:171 [ref. 38818], Kovačić et al. 2021:32 [ref. 39014], Ragkousis et al. 2021:11 [ref. 38358], Borg et al. 2022:218 [ref. 39630], Digenis & Navarro-Barranco in Digenis et al. 2024:104 [ref. 40958]). Current status: Valid as Grammonus ater (Risso 1810). Bythitidae. Distribution: Mediterranean Sea endemic. Habitat: marine.