Tigriopus Norman, 1869
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publication ID |
https://doi.org/ 10.11646/zootaxa.5051.1.6 |
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publication LSID |
lsid:zoobank.org:pub:33238221-53F9-4842-8056-9536C09DD112 |
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DOI |
https://doi.org/10.5281/zenodo.5564483 |
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persistent identifier |
https://treatment.plazi.org/id/094CF257-FF8F-B52E-FF1D-FB13FC9EFEBF |
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treatment provided by |
Plazi |
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scientific name |
Tigriopus Norman, 1869 |
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Key to species of the genus Tigriopus Norman, 1869
1. Antennary exp-2 with two setae............................................................ T. brachydactylus .
- Antennary exp-2 with one seta...........................................................................2.
2. P4 exp-3 with two inner setae...........................................................................3.
- P4 exp-3 with three inner setae..........................................................................7.
3. Male P2 enp-2 inner seta discrete at base.......................................................... T. japonicus .
- Male P2 enp-2 inner seta fused to segment.................................................................4.
4. Anal operculum with fine hairs............................................................... T. californicus .
- Anal operculum naked.................................................................................5.
5. Innermost seta of female P6 not extending to posterior margin of genital double-somite; mandible with 3-segmented exopod; exopod of maxillule with three setae......................................................................6.
- Innermost seta of female P6 extending far beyond posterior margin of genital double-somite; mandible with 2-segmented exopod; exopod of maxillule with five setae............................................. T. wannapaensis sp. nov.
- Innermost seta of female P6 extending far beyond posterior margin of genital double-somite; mandible with 3-segmented exopod; exopod of maxillule with three setae................................................... T. sirindhornae .
6. Female P6 with outermost plumose seta and two bare setae; maxillulary coxa with four setae....... T. namsaiensis sp. nov. Female P6 with middle plumose seta, one bare, and one pinnate seta; maxillulary coxa with three setae..... T. thailandensis .
7. Female P5 endopod with four setae.......................................................................8. Female P5 endopod with five setae......................................................................10.
8. Mandibular basis with one seta; maxillipedal claw prehensile and well-developed............................. T. raki .
- Mandibular basis with two setae; maxillipedal claw reduced in length............................................9.
9. Male P5 endopod with one seta.................................................................. T. minutus .
- Male P5 endopod unarmed.......................................................................... T. igai .
10. Knob on male P2 enp-2 outer margin present..............................................................11.
- Knob on male P2 enp-2 outer margin absent...............................................................12.
11. Anal operculum with crenate margin; male P5 exopod with five setae.............................. T. kingsejongensis .
- Anal operculum with many fine hairs; P5 exopod with four setae...................................... T. angulatus .
12. Mandible with 1-segmented exopod; crescent shape between 1 st and 2 nd innermost seta on female P5 exopod present.....13.
- Mandible with 2-segmented exopod; crescent shape between 1 st and 2 nd innermost seta on female P5 exopod absent......14.
13. Female P5 exopod reaching to distal margin of baseoendopod (with setules on inner margin), male antennary allobasis with tiny abexopodal seta......................................................................... T. kerguelenensis .
- Female P5 exopod not reaching to distal margin of baseoendopod (without setules on inner margin), male antennary allobasis without abexopodal seta..................................................................... T. crozettensis .
14. Surfaces of antennary allobasis and P5 exopod in female with tuft of hairs.................................. T. fulvus .
- Surfaces of antennary allobasis and P5 exopod in female without tuft of hairs............................ T. brevicornis .
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