longipinnis, Plectrogenium Matsunuma [M.], Uesaka [K.], Yamakawa [T.] & Endo [H.] 2021:[33], Figs. 11g-h, 22 [Ichthyological Research v. 69 (no. 3); ref. 38803] Nuku Hiva, Marquesas Islands, French Polynesia, 08°55'1.2"′S, 140°14'06"W, depth 283 - 448 meters. Holotype: MNHN 2003-0993. Paratypes: MNHN 2021-0245 (3). The specific name is treated by us as an indeclinable noun. •Valid as Plectrogenium longipinnis Matsunuma, Uesaka, Yamakawa & Endo 2021. Current status: Valid as Plectrogenium longipinnis Matsunuma, Uesaka, Yamakawa & Endo 2021. Plectrogeniidae. Distribution: Pacific: Marquesas Islands, French Polynesia. Habitat: marine.