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Issue: Vol. 5729 No. 2: 15 Dec. 2025
Type: Article
Published: 2025-12-15
DOI: 10.11646/zootaxa.5729.2.6
Page range: 335-348
Abstract views: 180
PDF downloaded: 3

Description of two new species of nereidids (Annelida: Nereididae) from West Bengal, India, Bay of Bengal

Estuarine Biology Regional Centre; Zoological Survey of India; Gopalpur-On-Sea; Odisha 761002; India
Department of Marine Ecology; Centro de Investigación Científica y de Educación Superior de Ensenada; Ensenada; Baja California 22860; Mexico
Estuarine Biology Regional Centre; Zoological Survey of India; Gopalpur-On-Sea; Odisha 761002; India
Annelida Chaeta Intertidal Mudflat Namalycastis Nereis Paragnaths Taxonomy

Abstract

Two new species of nereidids, Namalycastis solenotognatha sp. nov. and Nereis dhritiae sp. nov. are described in the present paper. These species were collected from two different locations along the intertidal zones, which are situated near mangrove habitats and sandy beaches, respectively. Namalycastis solenotognatha sp. nov. can be distinguished from its resembling congeners from Indian waters mainly by having heterogomph spinigers in supra-preacicular neurochaeta in anterior chaetigers, and lacking notochaetae. Other features related to the size (antennae, eyes, postero-dorsal tentacular cirri, and neuropodial superior lobe) and shape (heterogomph falcigers and spinigers’ blades, and pygidium) of several prostomial and parapodial structures, as well as the number of canals in the jaws, help distinguish the new species. Further, N. dhritiae sp. nov. differs from the three infra group I.B.2 species recorded from India by the presence of a distinct tendon in the blades of notopodial homogomph falcigers, one paragnath on area V, and an anterior row of area VII–VIII with only small paragnaths. Namalycastis solenotognatha sp. nov. and Nereis dhritiae sp. nov. increase the total number of Nereididae species to 73 from the Indian coast, five species belonging to Namalycastis and nine to Nereis.

 

References

  1. Alves, P.R., Glasby, C.J., Paiva, P.C. & Santos, C.S.G. (2024) Is Namalycastis abiuma (Grube, 1871) (Annelida: Nereididae) restricted to its type-locality? Evidence of from morphological and molecular data. Ocean and Coastal Research, 72 (Supplement 1), e24028. https://doi.org/10.1590/2675-2824072.23098
  2. Bakken, T., Glasby, C.J., Santos, C.S.G. & Wilson, R.S. (2022) Nereididae Blainville, 1818. In: Purschke, G., Böggemann, M. & Westheide, W (Eds.), Handbook of Zoology Pleistoannelida, Errantia, II. De Gruyter, Osnabrück, pp. 259–307. https://doi.org/10.1515/9783110647167-010
  3. Day, J.H. (1973) Polychaeta collected by UD Gaikwad at Ratnagiri, South Bombay. Zoological Journal of Linnean Society, 52, 337–361. https://doi.org/10.1111/j.1096-3642.1973.tb01888.x
  4. de León-González, J.A., Villalobos-Guerrero, T.F. & Conde-Vela, V.M. (2021) Nereididae de Blainville, 1818. In: de León-González, J.A., Bastida-Zavala, J.R., Carrera-Parra, L.F., García-Garza, M.E., Salazar-Vallejo, S.I., Solís-Weiss, V. & Tovar-Hernández, M.A. (Eds.), Anélidos marinos de México y América tropical. Universidad Autónoma de Nuevo León, Monterrey, pp. 453–488.
  5. Dey Shuvo, S. (2021) Climatology of frequency, life period, energy and speed for tropical disturbances and cyclones over the Bay of Bengal. The Dhaka University Journal of Earth and Environmental Sciences, 10 (1), 23–31. https://doi.org/10.3329/dujees.v10i1.56277
  6. Fauvel, P. (1914) Annélides nouvelles des côtes de I’Inde. Bulletin du Muséum National d’Histoire Naturelle (Paris), 20, 391–398.
  7. Fauvel, P. (1953) The fauna of India including Pakistan, Ceylon, Burma and Malaysia: Annelida Polychaeta. The Indian Press Ltd, India, XII + 507 pp.
  8. Glasby, C.J. (1999) The Namanereidinae (Polychaeta: Nereididae). Part 1. Taxonomy and phylogeny. Records of the Australian Museum, 25, 1–129. https://doi.org/10.3853/j.0812-7387.25.1999.1354
  9. Glasby, C.J., Erséus, C. & Martin, P. (2021) Annelids in Extreme Aquatic Environments: Diversity, Adaptations and Evolution. Diversity, 13 (2), 98. https://doi.org/10.3390/d13020098
  10. Khan, R.A. (2003) Biodiversity of macrobenthos on the intertidal flats of Sunderban estuarine region, India. Records of Zoological Survey of India, 101 (3–4), 181–205. https://doi.org/10.26515/rzsi/v101/i3-4/2003/159557
  11. Leitão, F., Baptista, V., Teodósio, M.A., Hughes, S.J., Vasco, V. & Chícharo, L. (2014) The role of environmental and fisheries multi-controls in white seabream (Diplodus sargus) artisanal fisheries in Portuguese coast. Regional Environmental Change, 16, 163–176. https://doi.org/10.1007/s10113-014-0726-5
  12. Magesh, M., Glasby, C.J. & Kvist, S. (2014) Redescription of Namalycastis Glasby, Fernando & Rajasekaran, 2007 (Annelida, Nereididae, Namanereidinae) from India. Proceedings of the Biological Society of Washington, 127 (3), 455–465. https://doi.org/10.2988/0006-324X-127.3.455
  13. Magesh, A., Kvist, S. & Glasby, C.J. (2012) Description and phylogeny of Namalycastis jaya sp. nov. (Polychaeta, Nereididae, Namanereidinae) from the southwest coast of India. ZooKeys, 238, 31–43. https://doi.org/10.3897/zookeys.238.4014
  14. Mahapatro, D., Panigraphy, R.C., Panda, S. & Mishra, R.K. (2015) An updated checklist of benthic polychaetes of Asia’s largest brackish water coastal lagoon—The Chilika Lake. Journal of Coastal Zone of Management, 18, 406. https://doi.org/10.4172/2473-3350.1000406
  15. Misra, A. (1999) Polychaete. In: Ghosh, A.K. (Ed.), Fauna of West Bengal. 10, State Fauna Series No. 1, Zoological Survey of India, Calcutta, pp. 125–225.
  16. Misra, A., Chakrabarty, R.K. & Soota, T.D. (1987) Polycheta. In: Fauna of Orissa: Part I. Zoological Survey of India, Calcutta, pp. 69–90.
  17. Mitra, S. & Misra, A. (2006) A report on intertidal macrofauna of Talsari (Balasore: Orissa). Records of the Zoological Survey of India, 106 (3), 131–141. https://doi.org/10.26515/rzsi/v106/i3/2006/159194
  18. Mitra, S., Roy, M. & Misra, A. (2012) A first report of Flabelligerid polychaete Pherusa bengalensis from Odisha coast. Journal of Environment and Sociobiology, 9 (2), 195–196.
  19. Murugesan, P., Sarathy, P.P., Muthuvelu, P. & Gopalan, M. (2018) Diversity and distribution of polychaetes in mangroves of east coast of India. In: Sharma, S. (Ed.), Mangrove Ecosystem Ecology and Function. Intech Open Limited, London, pp. 107–130. https://doi.org/10.5772/intechopen.78332
  20. Read, G. & Fauchald, K. (Eds.) (2025) World Polychaeta Database. Nereididae Blainville. 1818. World Polychaeta Database. Available from: https://www.marinespecies.org/aphia.php?p=taxdetails&id=22496 (accessed 27 March 2025)
  21. Salazar-Vallejo, S.I., de León-González, J.A. & Conde-Vela, V.M. (2021) Revision of the species confused with “Nereis falsa” de Quatrefages, 1866 (Annelida, Nereididae). European Journal of Taxonomy, 779, 1–70. https://doi.org/10.5852/ejt.2021.779.1579
  22. Sivadas, S.K. & Carvaldo, R. (2020) Marine Annelida of India: taxonomy and status evaluation and an updated checklist. Journal of Threatened Taxa, 12 (12), 16647–16714. https://doi.org/10.11609/jott.5357.12.12.16647-16714
  23. Southern, R. (1921) Polychaeta of the Chilika Lake and also of fresh and brackish waters in other parts of India. Memoirs of the Indian Museum, 5 (8), 563–659.
  24. Spalding, M.D., Helen, E.F., Allen, G.R., Davidson, N., Ferdaña, Z.A., Finlayson, M., Halpern, B.S., Jorge, M.A., Lombana, A., Lourie, S.A., Martin, K.D., McManus, E., Molnar, J., Recchia, C.A. & Robertson, J. (2007) Marine ecoregions of the world: A bioregionalization of coastal and shelf areas. BioScience, 57 (7), 573–583. https://doi.org/10.1641/B570707
  25. Villalobos-Guerrero, T.F. & Idris, I. (2021) Reproductive morphology and redescription of Neanthes Kinberg, 1865 (Annelida: Nereididae) species from the south-eastern Asian seas, with comparative synoptic tables of accepted species. The European Zoological Journal, 88 (1), 556–594. https://doi.org/10.1080/24750262.2021.1899318
  26. Villalobos-Guerrero, T.F., Conde-Vela, V.M. & Sato, M. (2022) Review of Composetia Hartmann-Schröder, 1985 (Annelida: Nereididae), with the establishment of two new similar genera. Journal of Natural History, 55 (37–38), 2313–2397. https://doi.org/10.1080/00222933.2021.1976295
  27. Villalobos-Guerrero, T.F., Huč, S., Tilic, E., Hiley, A.S. & Rouse, G.W. (2024) A remarkable new deep-sea nereidid (Annelida: Nereididae) with gills. PLoS ONE, 19 (3), e0297961. https://doi.org/10.1371/journal.pone.0297961
  28. Villalobos-Guerrero, T.F., Park, T. & Idris, I. (2021) Review of some Perinereis Kinberg, 1865 (Annelida: Nereididae) species of Group 2 sensu Hutchings, Reid & Wilson, 1991 from the Eastern and South-eastern Asia seas. Journal of the Marine Biological Association of the United Kingdom, 101 (2), 279–307. https://doi.org/10.1017/S0025315421000126
  29. Wilson, R.S. (1984) Neanthes (Polychaeta: Nereididae) from Victoria with descriptions of two new species. Proceedings of the Royal Society of Victoria, 96 (4), 209–226.
  30. Wilson, R.S., Glasby, C.J. & Bakken, T. (2023) The Nereididae (Annelida)—diagnoses, descriptions and a key to the genera. ZooKeys, 1182, 35–134. https://doi.org/10.3897/zookeys.1182.104258

How to Cite

Pradhan, J., Villalobos-Guerrero, T.F. & Mohapatra, A. (2025) Description of two new species of nereidids (Annelida: Nereididae) from West Bengal, India, Bay of Bengal. Zootaxa, 5729 (2), 335–348. https://doi.org/10.11646/zootaxa.5729.2.6