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Issue: Vol. 5446 No. 3: 1 May 2024
Type: Article
Published: 2024-05-01
DOI: 10.11646/zootaxa.5446.3.5
Page range: 405-419
Abstract views: 2
PDF downloaded: 0

Two new polyclad (Platyhelminthes: Polycladida) flatworm species from the Lakshadweep Islands, India

Applied Research Centre for Environment and Marine Studies; King Fahd University of Petroleum and Minerals; Dhahran -31261; Saudi Arabia
Zoological Survey of India; Andaman and Nicobar Regional Centre; Horticulture Road; Haddo; Port Blair -744102; Andaman and Nicobar Islands; India
Platyhelminthes Arabian Sea Indian Ocean marine flatworm Paraplanocera kalpeniensis sp. nov. Pseudoceros bifascia sp. nov. Acotylea Cotylea Pseudocerotidae

Abstract

Two new species of marine flatworms, Paraplanocera kalpeniensis sp. nov. and Pseudoceros bifascia sp. nov., are described. The specimens were collected from the Lakshadweep Islands (situated in the Arabian Sea) in India and belong to the suborders Acotylea and Cotylea, respectively. Pink coloration with a few irregular white blotches on the dorsum and a white rim surrounding violet and purple marginal bands distinguishes Paraplanocera kalpeniensis sp. nov. from other congeners. Pseudoceros bifascia sp. nov. is characterised by two coloured bands on the pseudotentacles; white background colour with a black pattern on the dorsum; a thin broken orange sub-marginal band followed by a thick white rim and a thin fluorescent coloured longitudinal stripe that runs from cerebral eyespots to the posterior end. This is the fifth description in the genus Paraplanocera from the Indian Ocean and second from the Indian waters. With the inclusion of two new species, the total number of polyclad species found in Indian waters is now seventy-three.

References

  1. Apte, D. & Pitale, R.D. (2011) New records of polyclad flatworms (Platyhelminthes: Turbellaria) from coral reefs of Lakshadweep Island, India. Journal of the Bombay Natural History Society, 108 (2), 109−113.
  2. Bock, S. (1913) Studien über Polycladen. Zoologiska bidrag från Uppsala, 2, 31–344
  3. Bolaños, D.M., Gan, B.Q. & Ong, R.S.L. (2016) First records of pseudocerotid flatworms (Platyhelminthes: Polycladida: Cotylea) from Singapore: A taxonomic report with remarks on colour variation. Raffles Bulletin of Zoology, 34, 130–169.
  4. Dixit, S., Bayyana, S., Manjebrayakat, H., Saravanane, N. & Sudhakar, M. (2019) Polyclad fauna of Agatti Island, Lakshadweep, India: new records and description of two new species. Zootaxa, 4657 (2), 246–260. https://doi.org/10.11646/zootaxa.4657.2.2
  5. Dixit, S., Manjebrayakat, H. & Saravanane, N. (2020) A rare polyclad genus Bulaceros (Platyhelminthes: Polycladida: Pseudocerotidae): new species and new record from Indian coral atolls. Marine Biology Research, 16 (8–9), 632–642. https://doi.org/10.1080/17451000.2020.1870044
  6. Dixit, S., Manjebrayakath, H. & Saravanane, N. (2021) Two new Pseudoceros Platyhelminthes: Polycladida: Pseudocerotidae) from Agatti Island, India and a species checklist from Indian waters. Journal of the Marine Biological Association of the United Kingdom, 101 (2), 253–263. https://doi.org/10.1017/S0025315421000151
  7. Faubel, A. (1983) The Polycladida, Turbellaria. Proposal and establishment of a new system. Part I. The Acotylea. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 80, 17–121.
  8. Faubel, A. (1984) The Polycladida, Turbellaria. Proposal and establishment of a new system. Part II. The Cotylea. Mitteilungen aus dem Hamburgischen Zoologischen Museum und Institut, 81, 189–259.
  9. Hyman, L.H. (1939) Acoel and polyclad Turbellaria from Bermuda and the Sargassum. Bulletin of the Bingham Oceanographic Collection, 7, 1–35.
  10. Hyman, L.H. (1953) The polyclad flatworms of the Pacific coast of North America. Bulletin of the American Museum of Natural History, 100 (2), 265–392.
  11. Hyman, L.H. (1959) A further study of Micronesian polyclad flatworms. Proceedings of the United States National Museum, 108 (3410), 543–597. https://doi.org/10.5479/si.00963801.108-3410.543
  12. Kato, K. (1937) Polyclads collected in Idu, Japan. Japanese Journal of Zoology, 7, 211−231.
  13. Laidlaw, F.F. (1902) The marine Turbellaria with an account of the anatomy of some species. In: Gardiner, J.S. (Ed.), The Fauna and Geography of the Maldive and Laccadive Archipelagoes: Being the Account of the Work carried on and of the Collections made by an Expedition during the years 1899 and 1900. Vol. 1. The University Press, Cambridge, pp. 282–312.
  14. Laidlaw, F.F. (1903) On a collection of Turbellaria Polycladida from the Straits of Malacca. (Skeat Expedition 1899–1900). Proceedings of the Zoological Society of London, 1, 301–318.
  15. Lang, A. (1884) Die Polycladen (Seeplanarien) des Golfes von Neapel und der angrenzenden Meeres-Abschnitte: eine Monographie. Wilhelm Engelmann, Leipzig, 688 pp. https://doi.org/10.5962/bhl.title.10545
  16. Leuckart, F.S. (1828) n.k. In: Rüppell, E.D. & Leuckart, F.S., Neue wirbellose Thiere des rothen Meers. Atlas zu der Reise im nördlichen Afrika, 1828, pp. 12.
  17. Litvaitis, M.K., Bolaños, D.M. & Quiroga, S.Y. (2010) When names are wrong and colours deceive: unravelling the Pseudoceros bicolor species complex (Turbellaria: Polycladida). Journal of Natural History, 44 (13–14), 829–845. https://doi.org/10.1080/00222930903537074
  18. Meyer, F. (1922) Polycladen von Koseir (Rotes Meer). (Kollektion Professor Klunzinger.) Arch Naturgesch, 87 (10), 138–158.
  19. Newman, L.J. & Cannon, L.R.G. (1994) Pseudoceros and Pseudobiceros (Platyhelminthes, Polycladida, Pseudocertotidae) from eastern Australia and Papua New Guinea. Memoirs of the Queensland Museum, 37 (1), 205–266.
  20. Newman, L.J. & Cannon, L.R.G. (1995) The importance of the fixation of color, pattern and form in tropical Pseudocerotidae (Platyhelminthes,Polycladida). Hydrobiologia, 305, 141–143. https://doi.org/10.1007/BF00036376
  21. Newman, L.J. & Cannon, L.R.G. (1996) New genera of pseudocerotid flatworms (Platyhelminthes, Polycladida) from Australian and Papua New Guinean coral reefs. Journal of Natural History, 30 (10), 1425–1441. https://doi.org/10.1080/00222939600770811
  22. Newman, L.J. & Cannon, L.R.G. (1998) Pseudoceros (Platyhelminthes: Polycladida) from the Indo-Pacific with twelve new species from the Australia and Papua New Guinea. The Raffles Bulletin of Zoology, 46 (2), 293–323.
  23. Newman, L.J. & Cannon, L.R.G. (2003) Marine Flatworms. The World of Polyclads. CSIRO Publishing, Clayton, 97 pp. https://doi.org/10.1071/9780643101197
  24. Newman, L.J. & Cannon, L.R.G. (2005) Fabulous Flatworms: a guide to marine polyclads. Version 1. ABRS & CSIRO Publishing, Clayton. [CD-Rom]
  25. Newman, L.J., Norenburg, J.L. & Reed, S. (2000) Taxonomic and biological observations on the tiger flatworm, Maritigrella crozierae (Hyman, 1939), new combination (Platyhelminthes, Polycladida, Euryleptidae) from Florida waters. Journal of Natural History, 34, 799–808. https://doi.org/10.1080/002229300299264
  26. Ong, R.S.L., Bolaños, D.M. & Tong, S.J.W. (2018) New records of marine flatworms (Platyhelminthes: Polycladida: Cotylea) from Singapore. Nature in Singapore, 11, 53–62.
  27. Prudhoe, S. (1945) On the species of the genus Paraplanocera. Annals and Magazine of Natural History, 12, 195–202. https://doi.org/10.1080/00222934508527505
  28. Pitale, R. & Apte, D. (2021) Further addition to the Indian fauna of Euryleptidae (Polycladida: Cotylea) with description of a new Cycloporus Lang, 1884 and Eurylepta Ehrenberg, 1831. Zootaxa, 5052 (4), 486–500. https://doi.org/10.11646/zootaxa.5052.4.2
  29. Plehn, M. (1898) Polycladen von Ternate. Abhand Senckenb naturforsch Ges, 24, 145–146. https://doi.org/10.1055/s-0029-1204275
  30. Prudhoe, S. (1989) Polyclad turbellarians recorded from African Waters. Bulletin of the British Museum of Natural History, Zoology, 55 (1), 47–96
  31. Ramos-Sánchez, M., Bahia, J. & Bastida-Zavala, J.R. (2019) New genus, new species and new records of marine acotylean flatworms (Platyhelminthes: Polycladida: Acotylea) from Oaxaca, southern Mexican Pacific. Zootaxa, 4700 (1), 030–058. https://doi.org/10.11646/zootaxa.4700.1.2
  32. Rodríguez, J., Hutchings, P.A. & Williamson, J.E. (2021) Biodiversity of intertidal marine flatworms (Polycladida, Platyhelminthes) in southeastern Australia. Zootaxa, 5024 (1), 1–63. https://doi.org/10.11646/zootaxa.5024.1.1
  33. Schmarda, L.K. (1859) Neue Turbellarien, Rotatorien und Anneliden beobachtet und gesammelt auf einer Reise um die Erde 1853 bis 1857. Neue Wirbellose Thiere. I. W. Engelmann, Leipzig, 66 pp., 15 pls. https://doi.org/10.5962/bhl.title.14426
  34. Soutullo, P., Cuadrado, D. & Norena, C. (2021) First study of the Polycladida (Rhabditophora, Platyhelminthes) from the Pacific Coast of Costa Rica. Zootaxa, 4964 (2), 363–381. https://doi.org/10.11646/zootaxa.4964.2.7
  35. Sreeraj, C.R., Raghunathan, C., Raghuraman, R., Dixit, S. & Venkataraman, K. (2015) Polyclads of Andaman and Nicobar Islands. Zoological Survey of India, Kolakata, 100 pp.
  36. Stummer-Traunfels, R. (1933) Polycladida. In: Bronn, H.G. (Ed.), Klassen und Ordnungen des Tierreichs, Band IV, Abteilung lc, Lieferung 179, pp. 3485–3596.
  37. WoRMS (2022) Tyler, S., Artois, T., Schilling, S., Hooge, M. & Bush, L.F. (Eds.) (2006-2022). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Paraplanocera Laidlaw, 1903. Accessed through: World Register of Marine Species. Available from: https://www.marinespecies.org/aphia.php?p=taxdetails&id=479836 (accessed 16 September 2022)
  38. Verrill, A.E. (1901) Additions to the fauna of the Bermudas from the Yale Expedition of 1901, with notes on other species. Transactions of the Connecticut Academy of Arts and Sciences, 11, 15–62.
  39. Willey, A. (1897) Letters from New Guinea on Nautilus and some other organisms. Quarterly Journal of Microscopical Science, 39 (2), 145–180. https://doi.org/10.1242/jcs.s2-39.154.145
  40. Yeri, M. & Kaburaki, T. (1918) Description of some Japanese polyclad Turbellaria. In: The Journal of the College of Science. Vol. 39. Imperial University of Tokyo, Tokyo, pp. 1–54.