vitiazi, Pelagocyclus Lindberg [G. U.] & Legeza [M. I.] 1955:437, Figs. 24-25 [Trudy Zoologicheskogo Instituta, Akademii Nauk SSSR v. 18; ref. 2785] Northeast of Simushir Island, Kuril Islands, depth 0-50 meters over bottom depth of 3000 meters. Holotype: ZIN 33759. Paratypes: ZIN 33666 (1). •Valid as Pelagocyclus vitiazi Lindberg & Legeza 1955 -- (Ueno 1970:145 [ref. 26199], Kido in Masuda et al. 1984:337 [ref. 6441], Lindberg & Krasyukova 1987:372 [ref. 15964]). •Synonym of Aptocyclus ventricosus (Pallas 1769) -- (Kido & Shinohara 1996:175 [ref. 22205], Sheiko & Fedorov 2000:31 [ref. 25650], Mecklenburg et al. 2002:558 [ref. 25968], Parin et al. 2002:S104 [ref. 28300], Mecklenburg & Sheiko 2003:3 [ref. 27295], Parin et al. 2014:304 [ref. 33547], Oku et al. 2017:53 [ref. 35060], Voskoboinikova & Orlovskaya 2020:43 [ref. 38114]). Current status: Synonym of Aptocyclus ventricosus (Pallas 1769). Cyclopteridae: Liparopsinae. Habitat: marine.