flavicinctus, Gymnoxenisthmus Gill [A. C.], Bogorodsky [S. V.] & Mal [A. O.] 2019:178, Fig. 1A-C, 2 [Zootaxa 4590 (no. 1); ref. 36679] Sharm Obhur, Red Sea, Jeddah, Saudi Arabia, 21°42'30"N, 39°05'44"E, depth 14-16 meters. Holotype (unique): SMF 35866. •Valid as Gymnoxenisthmus flavicinctus Gill, Bogorodsky & Mal 2019 -- (Parenti 2021:56 [ref. 38603], Bogorodsky & Goren 2023:27 [ref. 40247]). Current status: Valid as Gymnoxenisthmus flavicinctus Gill, Bogorodsky & Mal 2019. Xenisthmidae. Distribution: Red Sea endemic. Habitat: marine.