Leptopentacta H. L. Clark 1938

• Main Authors: Mezali, Karim, Thandar, Ahmed S., Khodja, Ihcene
• Format: Text
• Language: unknown
• Published: Zenodo 2020
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Holothuroidea; Dendrochirotida; Cucumariidae; Leptopentacta; Pacific; Indian; Buttons; North West Atlantic
• Online Access: https://dx.doi.org/10.5281/zenodo.4537680; https://zenodo.org/record/4537680

Genus Leptopentacta H.L. Clark, 1938 Cucumaria (partim) Sars, 1859: 132. Parocnus Deichmann, 1941 (preoccupied)—replaced by Cherbocnus Thandar (in Thandar & Mjobo, 2014). Trachythyone (partim) Panning, 1949:426. Leptopentacta H.L. Clark, 1938: 453; Panning, 1966 (partim): 56. Diagnosis. (After H.L. Clark 1938, Deichmann 1941, Panning 1966, amended herein). A genus of Cucumariidae with an elongate, slender, more or less curved body, usually pentagonal in cross-section; tube feet rigid, non-retractile, relatively few, in a straight or zigzag single or double rows, confined to ambulacra, often more or less crowded in each ventral ambulacrum. Tentacles 10, dendritic, small, with ventral pair reduced. Calcareous ring always with posteriorly forked radial plates. Body wall either encased in a firm calcified epidermis comprising scales or enlarged lenticular bodies covered with a course reticulum and often also numerous small, smooth to knobbed buttons beneath these. External layer of ossicles as rosettes only, or baskets only, or both rosettes and baskets, or absent. Type species. Leptopentacta grisea H.L. Clark, 1938 (by original designation). Other species included herein. L. imbricata (Semper, 1867) (with synonyms O. typicus Théel, 1886; O. javanicus Sluiter,1880); L. bacilliformis (Koehler & Vaney, 1908); L. panamica Deichmann, 1941; L. punctabipedia Cherbonnier, 1961; and hesitantly? L. nina Deichmann, 1941. Remarks. This genus was established only for the type species by H.L. Clark (1938). Since then various other species were included in it or described as new, raising the figure to 11. The fate of some of these species is considered above and some are now transferred to the new genus Paraleptopentacta . Hence, only six species now remain in the genus, which appears to be clearly tropical Indo-Pacific in distribution. : Published as part of Mezali, Karim, Thandar, Ahmed S. & Khodja, Ihcene, 2020, Paraleptopentacta, a new Mediterranean and north-west Atlantic sea cucumber genus, with the first record of P. tergestina n. comb. (Echinodermata Dendrochirotida: Cucumariidae) from the north-western Algerian coast, pp. 199-210 in Zootaxa 4860 (2) on pages 204-205, DOI: 10.11646/zootaxa.4860.2.3, http://zenodo.org/record/4537555 : {"references": ["Clark, H. L. (1938) Echinoderms from Australia. Memoires of the Museum of Comparative Zoology, Harvard College, 1938, 441 - 560.", "Sars, M. (1859) Bidrag til Kundskaben om Middelhavets Littoral Fauna, Reisebemaerkningerfra Italien. (2 den Afhandling). Nyt Magazin for Naturvidenskaberne, 10 (1), 57 - 155.", "Deichmann, E. (1941) The Holothuroidea collected by the Velero III during the years 1932 - 1938. Part 1: Dendrochirota. Allan Hancock Pacific Expedition, 8, 61 - 196.", "Thandar, A. S. & Mjobo, S. (2014) On some sea cucumbers from Ghana (Echinodermata: Holothuroidea) with descriptions of a new genus and one new species. Zootaxa, 3900 (2), 243 - 254. https: // doi. org / 10.11646 / zootaxa. 3900.2.4", "Panning, A. (1949) Revision of the family Cucumariidae, Holothurioidea, Dendolrichnota. Zoologische Jahrbucher Abteilung fur Systematik, Okologie Geographie Tiere, 78, 1 - 111.", "Panning, A. (1966) Bermerkungen uber die Holothurien-Familie Cucumariidae (Ordnung Dendrochirota) 5 Teil. Die Gattungen Heterothyone (Panning, 1949) und Leptopentacta H. L. Clark (1938). Mitteilungenaus dem Hamburgischen Zoologischen Museum und Institut, 63, 51 - 69.", "Semper, C. (1867) Holothurien. In: Semper, C. (Eds.), Reisen im Archipel der Philippinen. Zweiter Theil. Wissenschaftliche Resultate. Erster Band. Wilhelm Engelmann Leipzig, pp. x- 228. https: // doi. org / 10.5962 / bhl. title. 11687", "Theel, H. (1886) Report on the Holothurioidea collected by H. M. S. Challenger during the Years 1873 - 76. Part II. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76, Zoology, 14 (39), 1 - 290.", "Sluiter, C. P. (1880) Uber einige neue Holothurien von der West-Kuste Java's. Natuurkundig tijdschrift voor Nederlandsch Indie, 11, 332 - 358.", "Koehler, R. & Vaney, C. (1908) Holothuries recueillies par l'Investigator dans l'Ocean Indien. II. Les Holothuries Littorales. Echinoderma of the Indian Museum, Calcutta, 54 pp.", "Cherbonnier, G. (1961) Holothuries recoltees par B. A. Gallardo dans la Baie de Nha-Trang (Sud Viet-Nam). Bulletin du Museum national d'Histoire Naturelle, 32 (4), 425 - 428, figs. 1 a-l + 2 a & b."]}