Seborgia, Bousfield, 1970

Shimomura, Michitaka & Fujita, Yoshihisa, 2021, Seborgia cavernicola sp. nov. from a submarine cave on Okinawa Island, Ryukyu Islands, southwestern Japan (Crustacea, Amphipoda, Seborgiidae), Zootaxa 4927 (1), pp. 133-142 : 141

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