Spongicoloides, Hansen, 1908

Zhao, Yu, Xu, Ting, Yang, Weidi & Qiu, Jian-Wen, 2021, A new species of the deep-sea shrimp genus Spongicoloides (Decapoda: Spongicolidae) from the South China Sea, Zootaxa 5005 (3), pp. 276-290 : 288

Key to the Species of Spongicoloides

[adapted from Baba (1983), Saito et al. (2006), Xu et al. (2017) and Kou et al. (2018)].

1. First four pereiopods with single arthrobranch.............................................................. 2

- First four pereiopods with paired arthrobranchs............................................................. 5

2. First and second maxilliped with single arthrobranch......................................................... 3

- First and second maxilliped without arthrobranch............................................................ 4

3. First and second maxilliped both with rudimentary arthrobranch; ischium of third pereiopod smooth, without tooth or process............................................................................... S. profundus Hansen, 1908

- First and second maxilliped each with a well-developed arthrobranch; ischium of third pereiopod with small teeth on ventral margin and process on distodorsal margin......................................... S. tabachnicki Burukovsky, 2009

4. Carapace almost glabrous; podobranch on second maxilliped and arthrobranch on fourth pereiopod rudimentary......................................................................................... S. inermis (Bouvier, 1905)

- Carapace with numerous spinules; podobranch on second maxilliped and arthrobranch on fourth pereiopod well-developed................................................................................. S. galapagensis Goy, 1980

5. Second maxilliped with paired arthrobranchs........................................ S. novaezelandiae Baba, 1979

- Second maxilliped with single arthrobranch................................................................ 6

6. Third maxilliped with single arthrobranch............................................. S. evolutus (Bouvier, 1905)

- Third maxilliped with paired arthrobranchs................................................................. 7

7. Carapace smooth, without hepatic groove.............................................. S. hawaiiensis Baba, 1983

- Carapace with postorbital and anterolateral spines, with a shallow hepatic groove.................................. 8

8. Fixed finger of third pereiopod unarmed on distoventral margin; palm and ischium of third pereiopod smooth............ 9

- Fixed finger of third pereiopod armed with small teeth on distoventral margin; palm of third pereiopod with small granules or teeth on ventral margin; ischium of third pereiopod with small teeth on ventral margin and process on distodorsal margin.... .................................................................................................. 10

9. Rostrum reaching to distal margin of proximal segment of antennular peduncle.......................................................................................................... S. weijiaensis Xu, Zhou & Wang, 2017

- Rostrum not reaching to distal margin of proximal segment of antennular peduncle......................................................................................................... S. corbitellus Kou, Li & Gong, 2018

10 Antennal basicerite of female armed with 1 large spine at distolateral margin.................................................................................................... S. iheyaensis Saito, Tsuchida & Yamamoto, 2006

- Antennal basicerite of female armed with 3 large spines at distolateral margin......................... S. zhoui sp. nov.