A new deep-water species of Trischizostoma (Crustacea: Amphipoda: Gammaridea: Trischizostomatidae) from western Mexico, NE Pacific Ocean
Winfield, I.; Hendrickx, M.E.; Ortiz, M. (2017). A new deep-water species of Trischizostoma (Crustacea: Amphipoda: Gammaridea: Trischizostomatidae) from western Mexico, NE Pacific Ocean. J. Mar. Biol. Ass. U.K. 97(1): 141-149. https://hdl.handle.net/10.1017/s0025315416000187
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769, more
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| Keywords |
Classification > Taxonomy
Taxa > Species > New taxa > New species
Amphipoda [WoRMS]; Crustacea [WoRMS]; Trischizostoma Boeck, 1861 [WoRMS]
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| Author keywords |
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| Authors | | Top |
- Winfield, I.
- Hendrickx, M.E., more
- Ortiz, M.
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| Abstract |
A new species of Trischizostoma collected at depths of 1392–1420 m from western Mexico is described. It represents the first record of the genus in the NE Pacific. The new species is morphologically similar to T. circulare, T. tohokuense and T. richeri. These species all share a large rostrum, expanded eyes and an entire telson. Distinctive characters of the new species include a dorsally unnotched urosomite 1, a subconical coxa 2, a subtriangular propodus of gnathopod 1, a single seta and one protuberance on the palm of gnathopod 2, the presence of 10 spine-teeth in the outer plate of maxilla 1 and of a large, 1-articulate maxilla 1 palp, and the telson with 2 minute simple setae and 2 minute projections distally. |
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