A new species of the genus Tetranchyroderma (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Korea, with a peculiar pentancrous armature
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Title
- A new species of the genus Tetranchyroderma (Gastrotricha: Macrodasyida: Thaumastodermatidae) from Korea, with a peculiar pentancrous armature
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Author(s)
- Lee, Jimin; Chang, Cheon Young; Kim, Il-Hoi
- KIOST Author(s)
- Lee, Ji Min(이지민)
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Alternative Author(s)
- 이지민
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Publication Year
- 2017-11-13
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Abstract
- Surveys of marine gastrotrichs on the coast of South Korea yielded a new species of the genus Tetranchyroderma, bearing 5-pronged hooks as a cuticular armature. Tetranchyroderma hummoni is characterized by a dorsal armature adorned with pentancres, whose central tines are about twice as long as peripheral tines. The new species is also characterized by bearing 3 large and broad papillae per side along boundary row of pentancres on oral hood, a pair of rod-like cephalic tentacles, and a pair of modified pestle organs. Moreover, this new species is clearly distinguished from its congeners by the number of dorsal, dorsolateral and ventrolateral cirratum-type tubes (6-10, 13-19, and 9-14 per side, respectively), and by a pair of foot-like ventral adhesive tubes. The description of the new species belonging to the genus Tetranchyroderma is based on detailed illustrations and scanning electron microscopy. We also provide a short account on the variability within the species, including the morphological difference between juveniles and adults.
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ISSN
- 0006-324X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/40349
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DOI
- 10.2988/17-00016
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Bibliographic Citation
- PROCEEDINGS OF THE BIOLOGICAL SOCIETY OF WASHINGTON, v.130, no.1, pp.155 - 164, 2017
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Publisher
- BIOL SOC WASHINGTON
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Subject
- ITALIAN MARINE GASTROTRICHA; SOUTH-KOREA; PTYCHOSTOMELLA MACRODASYIDA; ISLAND; BEACH; KEY
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Keywords
- interstitial; marine; meiofauna; northwest Pacific; pentancres; taxonomy
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Type
- Article
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Language
- English
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Document Type
- Article
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