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Description of a new kinorhynch species, Paracentrophyes sanchezae n. sp. (Kinorhyncha: Allomalorhagida) from the Gulf of Mexico, with differential notes on one additional, yet undescribed species of the genus



A new kinorhynch species, Paracentrophyes sanchezae n. sp., is described from the Gulf of Mexico. The new species is distinguished from its congeners by its relatively low number of perispinal setae. In addition to the new species, the existence of one undescribed species of Paracentrophyes in the Gulf of Mexico is also reported. This undescribed species has very short lateral terminal spines, and the number of perispinal setae is lower than in any other known species of Paracentrophyes. Diagnostic notes are provided for this unnamed species, but the available material is too limited to provide a formal description.



Kinorhyncha, kinorhynchs, meiofauna, Mixtophyes, taxonomy

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Burgess, R. (2001) An improved protocol for separating meiofauna from sediments using colloidal silica sols. Marine Ecology Progress Series, 214, 161–165.

Dal Zotto, M. & Todaro, A. (2016) Kinorhyncha from Italy, a revision of the current checklist and an account of the recent investigations. Zoologischer Anzeiger, 265, 90–107.

Higgins, R.P. (1969) Indian Ocean Kinorhyncha 2. Neocentrophyidae, a new homalorhagid family. Proceedings of the Biological Society of Washington, 82, 113–128.

Higgins, R.P. (1983) The Atlantic Barrier Reef ecosystem at Carrie Bow Cay, Belize. II. Kinorhyncha. Smithsonian Contributions to Marine Science, 18, 1−131.

Landers, S.C. & Sørensen, M.V. (2016) Two new species of Echinoderes (Kinorhyncha, Cyclorhagida), E. romanoi sp. n. and E. joyceae sp. n., from the Gulf of Mexico. ZooKeys, 594, 51–71.

McIntyre, A.D. (1962) The class Kinorhyncha (Echinoderida) in British waters. Journal of the Marine Biological Association, UK, 42, 503–509.

Neuhaus, B. (1995) Postembryonic development of Paracentrophyes praedictus (Homalorhagida): neoteny questionable among the Kinorhyncha. Zoologica Scripta, 24, 179–192.

Pardos, F., Sánchez, N. & Herranz, M. (2016a) Two sides of a coin: The Phylum Kinorhyncha in Panama. I) Caribbean Panama. Zoologischer Anzeiger, 265, 3–25.

Pardos, F., Herranz, M. & Sánchez, N. (2016b) Two sides of a coin: The Phylum Kinorhyncha in Panama. II) Pacific Panama. Zoologischer Anzeiger, 265, 3–25.

Sánchez, N., Herranz, M., Benito, J. & Pardos, F. (2012) Kinorhyncha from the Iberian Peninsula: new data from the first intensive sampling campaigns. Zootaxa, 3402, 24–44.

Sánchez, N., Pardos, F. & Sørensen, M.V. (2014) A new kinorhynch genus, Mixtophyes (Kinorhyncha: Homalorhagida), from the Guinea Basin deep-sea, with new data on the family Neocentrophyidae. Helgoland Marine Research, 68, 221–239.

Sørensen, M.V., Pardos, F., Herranz, M. & Rho, H.S. (2010) New data on the genus Paracentrophyes (Homalorhagida, Kinorhyncha), with the description of a new species from the West Pacific. The Open Zoology Journal, 3, 42–59.

Sørensen, M.V., Dal Zotto, M., Rho, H.S., Herranz, M., Sanchez, N., Pardos, F. & Yamasaki, H. (2015) Phylogeny of Kinorhyncha based on morphology and two molecular loci. PLoS ONE, 10 (7), e0133440.

Sørensen, M.V. & Landers, S.C. (2014) Two new species of Echinoderes (Kinorhyncha: Cyclorhagida) from the Gulf of Mexico. Frontiers in Marine Science, 1, article 8, 1–18.

Sørensen, M.V., Herranz, M. & Landers, S.C. (2016) A new species of Echinoderes (Kinorhyncha: Cyclorhagida) from the Gulf of Mexico, with a redescription Echinoderes bookhouti Higgins, 1964. Zoologischer Anzeiger, 265, 48–68.

Yamasaki, H., Hiruta, S.F. & Kajihara, H. (2013) Molecular phylogeny of kinorhynchs. Molecular Phylogenetics and Evolution, 67, 303–310.

Yildiz, N.Ö., Sørensen, M.V. & Karaytuğ, S. (2016) A new species of Cephalorhyncha Adrianov, 1999 (Kinorhyncha: Cyclorhagida) from the Aegean Coast of Turkey. Helgoland Marine Research, 70, 24–24.

Zelinka, C. (1928) Monographie der Echinodera. Verlag Wilhelm Engelmann, Leipzig, 396 pp.



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