Four new species of the genus Paraustrorhynchus (Rhabdocoela: Kalyptorhynchia: Polycystididae)
Autor: | Yi-Tao Lin, Bart Tessens, Wei-Tao Feng, Tom Artois, Patrick Reygel, Ernest R. Schockaert, Niels Van Steenkiste, Jia-Jia Chen, An-Tai Wang |
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Rok vydání: | 2019 |
Předmět: |
Male
0106 biological sciences China 010607 zoology royalty.order_of_chivalry India Zoology royalty Biology 010603 evolutionary biology 01 natural sciences boats Monophyly New Caledonia Rhabditophora boats.ship_class Animals Phylogeny Ecology Evolution Behavior and Systematics Phylogenetic tree Rhabdocoela Stylet Taxon Sister group Platyhelminths Animal Science and Zoology Taxonomy (biology) |
Zdroj: | Zootaxa. 4550 |
ISSN: | 1175-5334 1175-5326 |
DOI: | 10.11646/zootaxa.4550.3.4 |
Popis: | Four new species of Paraustrorhynchus (Rhabdocoela: Kalyptorhynchia: Polycystididae) are described: two from Southern China (P. shenda n. sp., P. sinensis n. sp.), one from New Caledonia (P. isoldeae n. sp.), and one from India (P. smeetsae n. sp.). All four species show a typical dark blue dorsal pigmentation pattern, which is unique to the genus. This pigment forms a broad longitudinal line in P. shenda n. sp. and P. sinensis n. sp., shows an additional transverse band at the level of the pharynx in P. smeetsae n. sp. and forms a Y-shaped pattern in P. isoldeae n. sp. The four species can also be distinguished from each other and their congeners by the detailed morphology of the hard parts of the male system, which in all cases consists of an L-shaped (P. shenda n. sp., P. isoldeae n. sp) or slightly-curved (P. smeetsae n. sp., P. sinensis n. sp.) prostate stylet type II and a prostate stylet type III, which consists of three plates: a basal plate from which two longer plates depart, each with a distal serrated rim. A phylogenetic analysis based on 18S and 28S-rDNA data indicates that Paraustrorhynchus is a monophyletic taxon within Polycystidinae, with Alcha evelinae as the sister group. |
Databáze: | OpenAIRE |
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