derjugini, Radulinopsis Soldatov [V. K.] in Soldatov & Lindberg 1930:189, Figs. 32-33 [Izvestiia Tikhookeanskogo Nauchno-Issledovatel'skogo Instituta Rybnogo Khoziaistva i Okeanografii [Proceedings, Pacific Research Institute of Fisheries and Oceanography, TINRO, Moskva] v. 5; ref. 4164] Peter the Great Bay, Russia. Syntypes: (2) not at ZIN. •Valid as Radulinopsis derjugini Soldatov 1930 -- (Lindberg & Krasyukova 1987:188 [ref. 15964], Sokolovskaya et al. 1998:10 [ref. 24670]). •Synonym of Radulinopsis derjavini Soldatov & Lindberg 1930 -- (Yabe & Maruyama 2001:53 [ref. 25245]). Current status: Synonym of Radulinopsis derjavini Soldatov & Lindberg 1930. Psychrolutidae: Psychrolutinae. Habitat: marine.