Parapharyngiella caribbaea n. sp., a new species of Trigonostomidae (Rhabdocoela; Platyhelminthes) from Cuba, with a taxonomical reassessment of the genus

Vol. 31 No. 1 (2018)
Published: January 5 2018
Caribbean Sea, flatworms, microturbellaria, Neotyphloplanida, Thalassotyphloplanida
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Authors

Yander L. Diez
yanderluis87@gmail.com
Biology Department, Universidad de Oriente, Santiago de Cuba, Cuba; Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Hasselt University, Universitaire Campus Gebouw D, Diepenbeek, Belgium.
Patrick Reygel
Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Hasselt University, Universitaire Campus Gebouw D, Diepenbeek, Belgium.
Tom Artois
Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Hasselt University, Universitaire Campus Gebouw D, Diepenbeek, Belgium.

A new species of Parapharyngiella Willems, Artois, Vermin, Backeljau & Schockaert, 2005, Parapharyngiella caribbaea n. sp., is described from Cuba. It differs from Parapharyngiella involucrum Willems, Artois, Vermin, Backeljau & Schockaert, 2005, the only other species in this genus, by a much more posterior position of the pharynx, indicating that the anterior position of the pharynx is not a diagnostic character for the genus. It also differs in the sclerotized copulatory organ having a protuberance that is longer than the mantle. A morphological reassessment of the two known populations of P. involucrum (Zanzibar and Spain) reveals that these populations differ in many details, indicating that they belong to two different species. The population from Spain, therefore, is considered a separate species: Parapharyngiella steenkistei n. sp. Moreover, Proxenetes mackfirae Karling, 1978 is transferred to the genus Parapharyngiella.

http://zoobank.org/urn:lsid:zoobank.org:pub:A78F4971-7193-461B-B161-99D2DB9D531A

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Parapharyngiella caribbaea n. sp., a new species of Trigonostomidae (Rhabdocoela; Platyhelminthes) from Cuba, with a taxonomical reassessment of the genus. (2018). Tropical Zoology, 31(1), 34-43. https://biology.pagepress.org/tz/article/view/45

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