Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2018-09-10
Page range: 375–384
Abstract views: 49
PDF downloaded: 2

Redescription of Cerceis biforamina Javed & Yousuf, 1996 from the Gulf of Oman (Crustacea: Isopoda: Sphaeromatidae) with remarks on the status of Cymodoce insolita Yousuf, 2011

Department of Animal Science, Faculty of Basic Science, Shahrekord University, Shahrekord, Iran.
Crustacea Isopoda Sphaeromatidea Gulf of Oman Indian Ocean Cerceis biforamina


Cerceis biforamina Javed & Yousuf, 1996 is redescribed and illustrated based on material from the Iranian coasts of the Gulf of Oman. This species is distinguished by the smooth pereonites 1–6, pereonite 7 with a row of tubercles and short setae; pleon dorsal surface with multiple prominent tubercles medially; pleotelson with two prominent semilunar tuberculate ridges and clearly trilobed posterior margin. Cerceis insolita Yousuf, 2011 is transferred to genus Cymodoce and synonymised with Cymodoce manorii (Nooruddin, 1965). An extended diagnosis is provided for the genus Cerceis.



  1. Baker, W.H. (1908) Notes on some species of the isopod family Sphaeromidae, from the South Australian coast. Transactions of the Royal Society of South Australia, 32, 138–162.

    Baker, W.H. (1926) Species of the isopod family Sphaeromidae from the eastern, southern and western coasts of Australia. Transactions and Proceedings of the Royal Society of South Australia, 50, 247–279.

    Barnard, K.H. (1936) Isopods collected by the R.I.MS. "Investigator". Records of the Indian Museum, 38 (2), 147–191.

    Boyko, C.B., Bruce, N.L., Hadfield, K.A., Merrin, K.L., Ota, Y., Poore, G.C.B., Taiti, S., Schotte, M. & Wilson, G.D.F. (Eds.) (2008 onwards). World Marine, Freshwater and Terrestrial Isopod Crustaceans database. Cerceis H. Milne Edwards, 1840. World Register of Marine Species. Available from: (accessed 4 May 2018)

    Glynn, P.W. (1970) A systematic study of the Sphaeromatidae (Crustacea: Isopoda) of Isla Margarita, Venezuela, with descriptions of three new species. Memoria de la Sociedad de Ciencias Naturales La Salle, 30, 1–48.

    Hale, H.M. (1929) The Crustaceans of South Australia. Part 2. In: Handbooks of the Flora and Fauna of South Australia. Issued by the British Science Guild (South Australia Branch). British Science Guild (South Australian Branch), Adelaide, pp. 201–380.

    Harrison, K. & Holdich, D.M. (1982) New eubrachiate sphaeromatid isopods from Queensland waters. Memoirs of the Queensland Museum, 20, 421–446.

    Harrison, K. & Holdich, D.M. (1984) Hemibranchiate sphaeromatids (Crustacea: Isopoda) from Queensland, Australia, with a world-wide review of the genera discussed. Zoological Journal of the Linnean Society, 81, 275–387.

    Haswell, W.A. (1881) On some new Australian marine Isopoda- Part II. Proceedings of the Linnean Society of New South Wales, 6, 181–197.

    Javed W. & Yousuf F. (1996) A new species of Cerceis (Isopoda, Sphaeromatidae) from the Arabian Sea. Crustaceana, 69 (2), 155–161.

    Khalaji-Pirbalouty, V., Bruce, N.L. & Wägele, J.W. (2013) The genus Cymodoce Leach, 1814 (Crustacea: Isopoda: Sphaeromatidae) in the Persian Gulf with description of a new species. Zootaxa, 3686 (5), 501.

    Khalaji-Pirbalouty, V. (2016). A new species of Cymodoce from Iran (Crustacea: Isopoda: Sphaeromatidae) with remarks on the status of Cymodoce manorii (Nooruddin, 1965) comb. nov. and Cymodoce spinula Yousuf & Javed, 2001. Zootaxa, 4084 (2), 267–276.

    Kussakin, O.G. & Malyutina, M.V. (1993) Sphaeromatidae (Crustacea: Isopoda: Flabellifera) from the South China Sea. Invertebrate Taxonomy, 7, 1167–1203.

    Milne Edwards, H. (1840) Histoire naturelle des Crustacés, comprenant l’anatomie, la physiologie et la classification de ces animaux. Librairie encyclopédique de Roret, Roret, Paris, 638 pp., 42 pls.

    Müller, H.G. (1991) Two new species of Cerceis and Dynoides from a sabellid reef at Sri Lanka (Crustacea: Isopoda: Sphaeromatidae). Zoologischer Anzeiger, 226 (5/6), 307–318.

    Nierstrasz, H.F. (1931) Die Isopoden der Siboga-Expedition. III. Isopoda Genuina II. Flabellifera. Siboga Expeditie Monographie, 32c, 123– 232.

    Nooruddin (1965) On some isopods of the families Idoteidae and Sphaeromidae collected from Manora Island. Proceedings of the Fourth Pan Indian Ocean Science Congress, Section B, Biological Sciences, 16–24 November 1960, Karachi, Pakistan, 261–269.

    Pillai, N.K. (1954) A preliminary note on the Tanaidacea and Isopoda of Travancore. Bulletin of the Central Research Institute, University of Travancore, Trivandrum, Natural Sciences, 3 (1), 1–21.

    Richardson, H. (1905) Monographs on the Isopods of North America. Bulletin of the United States National Museum, 54, 1–727.

    Yousuf, F. (2011) Cerceis insolita n. sp., a new species of sphaeromatid isopod crustacean from the coastal waters of Pakistan. Turkish Journal of Zoology, 35 (3), 663–670.