Seborgia cavernicola sp. nov. from a submarine cave on Okinawa Island, Ryukyu Islands, southwestern Japan (Crustacea, Amphipoda, Seborgiidae) Author Shimomura, Michitaka 0000-0002-2524-7160 Seto Marine Biological Laboratory, Kyoto University, 459 Shirahama-cho, Nishimuro-gun, Wakayama 649 - 2211, Japan. shimomura. michitaka 5 w @ kyoto-u. ac. jp; https: // orcid. org / 0000 - 0002 - 2524 - 7160 shimomura.michitaka5w@kyoto-u.ac.jp Author Fujita, Yoshihisa Okinawa Prefectural University of Arts, 1 - 4 Shuri-Tonokura, Naha, Okinawa 903 - 8602, Japan. text Zootaxa 2021 2021-02-11 4927 1 133 142 journal article 8128 10.11646/zootaxa.4927.1.9 9c0d1bc5-ef52-4ac2-868a-404f96e14820 1175-5326 4534081 6C5A8B9F-F813-4240-B584-F94A87260456 Key to species of Seborgia 1. Maxilla bilobed....................................................................................... 2 - Maxilla unilobed...................................................................................... 3 2. Uropod 3 uniramous.................................................................. S. potiguar Fišer et al. - Uropod 3 biramous.................................................................................... 4 3. Eyes fully developed or vestigial; rami of uropod 3 shorter than peduncle.............................................. 5 - Eyes absent; rami of uropod 3 longer than peduncle............................................................... 6 4. Article 2 of main flagellum of antennule longest; gland cone of antenna directed anteriorly; propodus of gnathopod 2 as long as wide................................................................................... S. cavernicola sp. nov. - Article 5 of main flagellum of antennule longest; gland cone of antenna directed posteriorly; propodus of gnathopod 2 about 1.3 times as long as wide.................................................................... S. sanctensis Jaume et al. 5. Rostrum well developed; posterodorsal margin of pleonites serrate; posterior margin of basis of pereopods 5–7 convex........................................................................................... S. schieckei Ruffo - Rostrum reduced; posterodorsal margin of pleonites smooth; posterior margin of basis of pereopods 5–7 angled............................................................................................. S. kanaka Jaume et al. 6. Rostrum well developed................................................................................ 7 - Rostrum reduced...................................................................... S. minima Bousfield 7. Inner lobes of paragnaths separate; relative size of gnathopods 1 and 2 equal.................. S. vietnamica Jaume et al. - Inner lobes of paragnaths separate partly fused; relative size of gnathopods 1 and 2 strongly unequal................... 8 8. Molar process of mandible without setules................................................ S. hershleri Holsinger - Molar process with setules................................................................ S. relicta Holsinger