Abstract
This paper reports ten species of Membraniporina and Thalamoporellina bryozoans collected along the Konkan coast of Maharashtra, India. Among these, Thalamoporella souleorum sp. nov. is described as new to science. Biflustra marcusi is recorded from India for the first time. Five species, Arbopercula angulata, Biflustra perambulata, Jellyella eburnea, Sinoflustra annae, and Thalamoporella hamata, are already known from the region. Three species (Arbocuspis sp., ?Einhornia sp., and Thalamoporella sp.) are left in open nomenclature owing to the poor preservation of the available material.
References
- Alam, S.M., Khan, A.K. & Nagabhushanam, R. (1988) Marine biofouling at Ratnagiri Coast, India. In: Thomson, M.P., Sarojini, R. & Nagabhushanam, R. (Eds.), Marine Biodeterioration. Oxford Publishing Company, pp. 539–550.
- Almeida, A.C.S., Alves, O., Peso-Aguiar, M., Dominguez, J. & Souza, F. (2015) Gymnolaemata bryozoans of Bahia state, Brazil. Marine Biodiversity Records, 8, e120. https://doi.org/10.1017/S1755267215000743
- Almeida, A.C.S., Larré, I.R.N.M. & Vieira, L.M. (2021) Ten new species of marine bryozoans (Gymnolaemata: Cheilostomatida) from Brazil. Zootaxa, 5048 (4), 511–537. https://doi.org/10.11646/zootaxa.5048.4.3
- Almeida, A.C.S., Souza, F.B.C. & Vieira, L.M. (2017) Malacostegine bryozoans (Bryozoa: Cheilostomata) from Bahia State, northeast Brazil: taxonomy and non-indigenous species. Marine Biodiversity, 48 (3), 1463–1488. https://doi.org/10.1007/s12526-017-0639-x
- Altvater, L. & Coutinho, R. (2015) Colonisation, competitive ability and influence of Stragulum bicolor van Ofwegen and Haddad, 2011 (Cnidaria, Anthozoa) on the fouling community in Paranaguá Bay, Southern Brazil. Journal of Experimental Marine Biology and Ecology, 462, 55–61. https://doi.org/10.1016/j.jembe.2014.10.007
- Badve, R.M. & Sonar, M.A. (1995) Bryozoa Cheilostomata from Holocene, west coast of Maharashtra, India. Geobios, 28 (3), 317–335. https://doi.org/10.1016/S0016-6995(95)80007-7
- Badve, R.M. & Sonar, M.A. (1997) Some fossil Neocheilostomine bryozoans from the Holocene of the west coast of Maharashtra and Goa, India. Journal of the Palaeontological Society of India, 42, 35–48. https://doi.org/10.1177/0971102319970103
- Bax, N.C.J.T., Carlton, J.T., Mathews‐Amos, A., Haedrich, R.L., Howarth, F.G., Purcell, J.E., Rieser, A. & Gray, A. (2001) The control of biological invasions in the world’s oceans. Conservation Biology, 15 (5), 1234–1246. https://doi.org/10.1111/j.1523-1739.2001.99487.x
- Bock, P.E. (2025) The Bryozoa Homepage. Available from: www.bryozoa.net
- Bosc, L.A.G. (1802) Histoire naturelle des vers: contenant leur description et leurs moeurs, avec figures dessinées d’après nature. Tome Troisième. Deterville, Paris, 324 pp. https://doi.org/10.5962/bhl.title.64025
- Busk, G. (1852) An account of the Polyzoa, and sertularian zoophytes, collected in the voyage of the Rattlesnake, on the coasts of Australia and the Louisiade Archipelago, &c. In: MacGillivray, J. (Ed.), Narrative of the Voyage of the H.M.S. Rattlesnake. London, pp. 343–402.
- Busk, G. (1854) Catalogue of marine Polyzoa in the collection of the British Museum, II. Cheilostomata (part). Trustees of the British Museum, London, 54 pp.
- Cangussu, L.C., Altvater, L., Haddad, M.A., Cabral, A.C., Heyse, H.L. & Rocha, R.M. (2010) Substrate type as a selective tool against colonization by non-native sessile invertebrates. Brazilian Journal of Oceanography, 58 (3), 219–231. https://doi.org/10.1590/S1679-87592010000300005
- Canu, F. & Bassler, R.S. (1929) Bryozoa of the Philippine region. United States National Museum Bulletin, 100, 1–685.
- Chapgar, B.F. & Sane, S.R. (1996) Intertidal entoprocta and ectoprocta (Bryozoa) of Bombay. Journal of Bombay Natural History Society, 63, 449–454.
- Carlton, J.T. (2002) Bioinvasion ecology: assessing invasion impact and scale. In: Leppäkoski, E., Gollasch, S. & Olenin, S. (Eds.), Invasive Aquatic Species of Europe—Distribution, Impacts and Management. Kluwer Academic Publishers, Dordrecht, pp. 7–19. https://doi.org/10.1007/978-94-015-9956-6_2
- Chaney, H.W., Soule, D.F. & Soule, J.D. (1989) Systematics and zoogeography of Thalamoporella gothica and its allied species (Bryozoa, Cheilostomata). Bulletin of Marine Science, 45, 338–355.
- Daniel, A. (1954) The seasonal variations and the succession of the fouling communities in the Madras harbour waters. Journal of Madras University, 24, 189–212.
- Dick, M.H. & Grischenko, A.V. (2017) Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan. Journal of Natural History, 51, 141–266. https://doi.org/10.1080/00222933.2016.1253797
- Ganapati, P.N. & Rao, K.S. (1968) Fouling bryozoans in Visakhapatnam Harbour. Current Science, 37 (3), 81–83.
- Ganapati, P.N., Rao, K.S. & Rao, M.L. (1969) Record of Kinetoskias sp. (Bicellariellidae, Polyzoa) from the Visakhapatnam coast, Bay of Bengal. Current Science, 38 (16), 387–388.
- Gaonkar, C.A., Sawant, S.S., Anil, A.C., Krishnamurthy, V. & Harkantra, S.N. (2010) Changes in the occurrence of hard substratum fauna: A case study from Mumbai harbor India. Indian Journal of Marine Sciences, 39 (1), 74–84.
- Gordon, D.P. (2009) Baudina gen. nov., constituting the first record of Pasytheidae from Australia, and Sinoflustridae fam. nov., with a checklist of Bryozoa and Pterobranchia from Beagle Gulf. The Beagle, Records of the Museums and Art Galleries of the Northern Territory, 25, 41–52. https://doi.org/10.5962/p.287447
- Gordon, D.P. (2016) Bryozoa of the South China Sea-an overview. Raffles Bulletin of Zoology, 34 (Supplement), 604–618.
- Grange, K.R. & Gordon, D.P. (2005) The spread and potential impact of the introduced bryozoan Biflustra grandicella. NIWA Final Fisheries Report for Ministry of Fisheries Research Project ZBS2003-07 Objectives, 1 (2), 3.
- Harmer, S.F. (1926) The Polyzoa of the Siboga Expedition. Part II, Cheilostomata Anasca. Siboga Expedition Reports, 28b, 183–501.
- Hincks, T. (1887) Critical notes on the Polyzoa. Journal of Natural History, 19 (110), 150–164. https://doi.org/10.1080/00222938709460215
- Hincks, T. (1891) Contributions towards a general history of the marine Polyzoa. Part XV (concluded). South African and other Polyzoa. Annals and Magazine of Natural History, Series 6, 7 (39), 285–298. https://doi.org/10.1080/00222939109460610
- Karande, A.A. & Udhayakumar, M. (1992) Consequences of crowding on life-histories of bryozoans in Bombay waters. Indian Journal of Marine Sciences, 21, 133–136.
- Levinsen, G.M.R. (1902) Studies on Bryozoa. Videnskabelige Meddelelser fra den naturhistoriske Forening i Kjøbenhavn, 54, 1–31.
- Levinsen, G.M.R. (1909) Morphological and Systematic Studies on the Cheilostomatous Bryozoa. Nationale Forfatteres Forlag, Copenhagen, 431 pp., 24 pls. https://doi.org/10.5962/bhl.title.5690
- Liu, X. (1991) A study on the anascan-cribrimorphan bryozoans from Nansha Islands of China. Bulletin of the Marine Biology of Nansha Islands and Neighbouring Seas, 1, 56–81. [In Chinese with English summary]
- Liu, X. (1992) On the genus Membranipora (Anasca: Cheilostomata: Bryozoa) from southern Chinese seas. Raffles Bulletin of Zoology, 40, 103–144.
- Liu, X. & Yang, Z. (1995) Systematic position of Membranipora amoyensis Robertson, 1921 (Membraniporoidea: Cheilostomata) [in Chinese]. In: Laih, C-H (Ed.), Proceedings of the marine science seminar on Taiwan Strait and the adjacent sea, Oceanic Press, pp. 346–355.
- López de la Cuadra, C.M. & García-Gómez, J.C. (1994) Zoogeographical study of the Cheilostomatida from the Straits of Gibraltar. In: Hayward, P.J., Ryland, J.S. & Taylor, P.D. (Eds.), Biology and Palaeobiology of Bryozoans. Olsen and Olsen, Fredensborg, pp. 107–112.
- Louis, S. & Menon, N.R. (2009) Biflustra perambulata n. sp. (Cheilostomata: Bryozoa), a new alien species from Cochin Harbour, Kerala, India. Zootaxa, 2066 (1), 59–68. https://doi.org/10.11646/zootaxa.2066.1.3
- Mankeshwar, M., Kulkarni, A. & Apte, D. (2015) Diversity of bryozoans of India with New records from Maharashtra. In: Venkataraman, K. & Sivaperuman, C. (Eds.), Marine Faunal Diversity in India. Taxonomy, Ecology and Conservation. Academic Press, Amsterdam, pp. 95–106. https://doi.org/10.1016/B978-0-12-801948-1.00007-0
- Marcus, E. (1937) Bryozoários Marinhos Brasileiros, 1. Boletim da Faculdade de Filosofia, Ciências e Letras da Universidade de São Paulo, Zoologia, 1, 5–224. https://doi.org/10.11606/issn.2526-4877.bsffclzoologia.1937.113912
- Mawatari, S. (1974) Fouling bryozoans in the black lip oyster culture fisheries at Ishigaki-jima, Yaeyama Islands. Memoirs of the National Museum of Nature and Science, Tokyo, 7, 193–202.
- McCann, L.D., Hitchcock, N.G., Winston, J.E. & Ruiz, G.M. (2007) Non-native bryozoans in coastal embayments of the southern United States: new records for the Western Atlantic. Bulletin of Marine Science, 80 (2), 319–342.
- Nikulina, E.A. (2007) Einhornia, a new genus for electrids formerly classified as the Electra crustulenta species group (Bryozoa, Cheilostomata). Schriften des Naturwissenschaftlichen Vereins für Schleswig-Holstein, 69, 29–40.
- Nikulina, E.A. (2010) Three new genera of Electridae (Bryozoa): Arbopercula, Osburnea, and Arbocuspis. Schriften des Naturwissenschaftlichen Vereins für Schleswig-Holstein, 72, 25–28.
- Orbigny, A. d’ (1852) Zoological research on the class of Mollusca Bryozoa. Annals of Natural Sciences, Zoology & Animal Biology, 17, 273–348.
- Osburn, R.C. (1940) Bryozoa of Porto Rico with a résumé of the West Indian bryozoan fauna. Scientific Survey of Porto Rico and the Virgin Islands, 16, 321–486.
- Osburn, R.C. (1953) Bryozoa of the Pacific coast of America, part 3, Cyclostomata, Ctenostomata, Entoprocta and Addenda. Report of the Allan Hancock Pacific Expeditions, 14, 613–841.
- Ortmann, A. (1890) Die japanische Bryozoenfauna. Bericht über die von Herrn Dr. L. Döderlein im Jahre 1880–81, gemachten Sammlungen. Archiv für Naturgeschichte, 56, 1–74, pls. 1–4.
- Ostrovsky, A.N. (2013) Evolution of Sexual Reproduction in Marine Invertebrates. Example of Gymnolaemate Bryozoans. Springer, Dordrecht, 356 pp. https://doi.org/10.1007/978-94-007-7146-8
- Pillai, S.R.M. (1978) A new species of Hippoporina (Ectoprocta, Ascophora) from Bombay Coast. Current Science, 47, 61–63.
- Pillai, S.R.M. (1981) A further report on taxonomy of fouling bryozoans from Bombay harbor and vicinity. Journal of Bombay Natural History Society, 78, 317–329.
- Pillai, S.R.M. & Santhakumaran, L.N. (1972) Two new records of bryozoans from Indian waters. Journal of Bombay natural History Society, 68 (3), 824–844.
- Rao, K.S. & Ganapati, P.N. (1972) On the common anascan genus Electra from Visakhapatnam and its vicinity. Proceedings of the Indian National Science Academy, 38, 220–224.
- Rao, K.S. & Ganapati, P.N. (1975) Littoral bryozoa in the Godavari Estuary. Bulletin of the Department of Marine Sciences, University of Cochin, 7 (3), 591–600.
- Rao, K.S. & Ganapati, P.N. (1978) Ecology of fouling bryozoans at Visakhapatnam harbor. Proceedings of the Indian Academy of Sciences-Section B, Animal Sciences, 87 (3), 63–75. https://doi.org/10.1007/BF03179003
- Rao, K.S. & Ganapati, P.N. (1980) Epizoic fauna of Thalamoporella gothica var. indica and Pherusella tubulosa (Bryozoa). Bulletin of Marine Science, 30 (1), 34–44.
- Raveendran, T.V., De Souza, A.P. & Wagh, A.B. (1990) Fouling polyzoans of Bombay offshore waters. Mahasagar: Bulletin National Institute of Oceanography, 23 (2), 169–178.
- Reverter-Gil, O. & Souto, J. (2023) New and non-indigenous species of Bryozoa from Iberian waters. European Journal of Taxonomy, 885, 33–64. https://doi.org/10.5852/ejt.2023.885.2187
- Robertson, A. (1921) Report on a collection of Bryozoa from the Bay of Bengal and other eastern seas. Record of Indian Museum, 22, 33–65. https://doi.org/10.5962/bhl.part.1465
- Rosso, A. (1994) Segnalazione di Electra tenella (Hincks)(Bryozoa) lungo le coste sud-orientali della Sicilia. Bollettino dell’Accademia Gioenia di Scienze Naturali, 27, 241–251.
- Silén, L. (1941) Cheilostomata Anasca (Bryozoa) collected by Prof. Dr. Sixten Bock’s expedition to Japan and the Bonin Islands 1914. Arkiv för Zoologi, 33A, 1–130.
- Sonar, M.A. & Badve, R.M. (2008) Fossil cyclostome bryozoans from the Holocene rocks of the west coast of Maharashtra and Goa, India. Gondwana Geological Magazine, 23 (1), 69–76.
- Sonar, M.A. & Badve, R.M. (2010) Fossil catenicellid bryozoans from the Holocene of the west coast of Maharashtra. Journal of the Geological Society of India, 76, 283–288. https://doi.org/10.1007/s12594-010-0098-5
- Sonar, M.A., Badve, R.M. & Gaikwad, S.G. (2010) Usefulness of Bryozoa to deduce palaeoenvironment: a case study from the Holocene of the West Coast of Maharashtra and Goa. Gondwana Geological Magazine, 25 (1), 69–80.
- Sonar, M.A., Wayal, D.V. & Badve, R.M. (2021) Lepraliomorph bryozoans from Holocene deposits along the Konkan Coast of Western India. Alcheringa, 45 (2), 274–287. https://doi.org/10.1080/03115518.2021.1916836
- Sonar, M.A., Pawar, R.V. & Wayal, D.V. (2022) Fossil Thalamoporellidae (Bryozoa) from Paleogene Neogene sediments of western Kachchh, Gujarat, India. Zootaxa, 5104 (2), 251–274. https://doi.org/10.11646/zootaxa.5104.2.5
- Soule, D.F. & Soule, J.D. (1970) New species of Thalamoporella (Ectoprocta) from Hawaii, examined by scanning electron microscopy. American Museum Novitates, 2417, 1–18.
- Soule, D.F., Soule, J.D. & Chaney, H.W. (1992) The genus Thalamoporella worldwide (Bryozoa, Anasca): Morphology, evolution and speciation. Irene McCulloch Foundation Monograph Series, 1, 1–93.
- Soule, D.F., Soule, J.D. & Chaney, H.W. (1999) New species of Thalamoporella (Bryozoa) with acute or subacute avicularium mandibles and review of known species worldwide. Irene McCulloch Foundation Monograph Series, 4, 1–57.
- Stach, L.W. (1937) Bryozoa of Lady Julia Percy Island. Proceedings of the Royal Society of Victoria, 49, 374–384.
- Subías-Baratau, A., Sanchez-Vidal, A., Di Martino, E. & Figuerola, B. (2022) Marine biofouling organisms on beached, buoyant and benthic plastic debris in the Catalan Sea. Marine Pollution Bulletin, 175, 1–11. https://doi.org/10.1016/j.marpolbul.2022.113405
- Swami, B.S. & Karande, A.A. (1987) Encrusting bryozoans in coastal waters of Bombay. Mahasagar: Bulletin National Institute of Oceanography, 20 (4), 225–236.
- Swami, B.S. & Karande, A.A. (1994) Encrusting bryozoans in Karwar waters, central west coast of India. Indian Journal of Marine Sciences, 23 (3), 170–172.
- Swami, B.S. & Udhayakumar, M. (2010) Seasonal influence on settlement, distribution and diversity of organisms at Mumbai harbor. Indian Journal of Marine Sciences, 39 (1), 57–67.
- Taylor, P.D. & Monks, N. (1997) A new cheilostome bryozoan genus pseudoplanktonic on molluscs and algae. Invertebrate Biology, 116, 39–51. https://doi.org/10.2307/3226923
- Taylor, P.D. & Tan, S-H-A. (2015) Cheilostome Bryozoa from Penang and Langkawi, Malaysia. European Journal of Taxonomy, 149, 1–34. https://doi.org/10.5852/ejt.2015.149
- Thornely, L. (1905) Report on the Polyzoa collected by Professor Herdman, at Ceylon, in 1902. Report to the Government of Ceylon on the Pearl Oyster Fisheries of the Gulf of Manaar, 4, 107–130.
- Thornely, L. (1907) Report on the marine Polyzoa in the collection of the Indian Museum. Records of the Indian Museum, 1, 179–196. https://doi.org/10.26515/rzsi/v1/i3/1907/163390
- Thornely, L. (1916) Report on the Polyzoa collected by Mr James Hornell at Okhamandal in Kattiawar. Report to the Government of Baroda on the Marine Zoology of Okhamandal in Kattiawar, 2, 157–165.
- Tilbrook, K.J. (2006) Cheilostomatous Bryozoa from the Solomon Islands. Santa Barbara Museum of Natural History Monographs, 4, 1–386.
- Tilbrook, K.J. (2012) Bryozoa, Cheilostomata: First records of two invasive species in Australia and the northerly range extension for a third. Checklist, 8 (1), 181–183. https://doi.org/10.15560/8.1.181
- Tilbrook, K.J. & Gordon, D.P. (2015) Bryozoa from the Straits of Johor, Singapore, with the description of a new species. Raffles Bulletin of Zoology, 31, 255–263.
- Venkatraman, C., Padmanaban, P., Louis, S. & Shrinivaasu, S. (2018) Marine bryozoans of Gujarat and Maharashtra. Records of the Zoological Survey of India, 111 (4), 389–404. https://doi.org/10.26515/rzsi/v118/i4/2018/122918
- Venkatraman, C., Rajan, R., Louis, S., Shrinivaasu, S. & Padmanaban, P. (2016) Bryozoans of Gulf of Mannar Marine Biosphere Reserve, southeast Coast of India. Records of the Zoological Survey of India, 116 (2), 167–189. https://doi.org/10.26515/rzsi/v116/i2/2016/117804
- Vieira, L.M., Almeida, A.C.S. & Winston, J.E. (2016) Taxonomy of intertidal cheilostome Bryozoa of Maceió, northeastern Brazil. Part 1: Suborders Inovicellina, Malacostegina and Thalamoporellina. Zootaxa, 4097 (1), 59–83. https://doi.org/10.11646/zootaxa.4097.1.3
- Vieira, L.M. & Migotto, A.E. (2015) Membraniporopsis tubigera (Osburn, 1940) (Bryozoa) on floating substrata: evidence of a dispersal mechanism in the western Atlantic. Marine Biodiversity, 45 (2), 155–156. https://doi.org/10.1007/s12526-014-0260-1
- WoRMS Editorial Board (2025) World Register of Marine Species. Available from: https://www.marinespecies.org (accessed 22 November 2025)
