Skip to main content Skip to main navigation menu Skip to site footer
Published: 2017-02-02

A new species of Lagis (Annelida: Polychaeta: Pectinariidae) from Korean waters

National Marine Biodiversity Institute of Korea, Seocheon, Chungcheongnam-do 33662, Korea
National Marine Biodiversity Institute of Korea, Seocheon, Chungcheongnam-do 33662, Korea
Department of Biology, Chosun University, Gwangju 61452, Korea
Annelida Lagis plurihamus new species pectinariids polychaetes taxonomy Korea


A new pectinariid polychaete, Lagis plurihamus sp. nov., is reported from intertidal habitats in the southern and western coasts of Korea. Lagis plurihamus sp. nov. is clearly distinguished from its congeners by a combination of the following morphological features: the cephalic veil bears usually 10–15 cirri; two pairs of thoracic branchiae are present on the segments 3 and 4; the scaphe is robust with 9–14 delicate scaphal hooks; the scaphal anal flap has a dorsal anal cirrus and fringed margin. Previously described species of Lagis from East Asia, L. bocki (Hessle, 1917) and L. crenulatus Sun & Qiu 2012 together with the newly described species L. plurihamus sp. nov., all have both short, recurved notochaetae with bordered serrations and long, straight notochaetae with fine serrations. We provide detailed description and illustrations with SEM photographs for the new species. A revised key to all Lagis species is also provided with a comparison of the morphological characteristics of them.



  1. Day, J.H. (1955) The Polychaeta of South Africa. Part 3. Sedentary species from Cape shores and estuaries. Journal of the Linnean Society of London, Zoology, 42, 407–452.

    Day, J.H. (1967) A monograph on the Polychaeta of Southern Africa. Trustees of the British Museum (Natural History), London, 878 pp.

    Day, J.H. (1963) The Polychaete fauna of South Africa. Part 8: New species and records from grab samples and dredgings. Bulletin of the British Museum (Natural History), Series Zoology, 10, 383–445.

    Ehlers, E. (1904) Neuseeländische Anneliden. Abhandlungen der Königlichen Gesellschaft der Wissenschaften zu Göttingen Mathematisch-Physikalische Klasse, Neue Folge, 3, 1–80.

    Fauchald, K. (1977) The Polychaete Worms. Definitions and keys to the orders, families and genera. Natural History Museum of Los Angeles County Science Series, 28, 1–190.

    Fauvel, P. (1927) Polychètes sédentaires. Faune de France, 16, 1–494.

    Fauvel, P. (1932) Annelida Polychaeta of the Indian Museum. Calcutta. Memoirs of the Indian Museum, 12, 1–262.

    García-Garza, M.E.& León-González, J.A. (2014) A new species of Amphictene (Annelida, Pectinariidae) from the Gulf of Mexico, with a redescription of Amphictene guatemalensis (Nilsson, 1928). Zookeys, 367, 1–9.

    Hartmann-Schröder, G. (1959) Zur Ökologie der Polychaeten des Mangrove‐Estero‐Gebietes von El Salvador. Beitrage zur Neotropischen Fauna, 1, 69–183.

    Hessle, C. (1917) Zur Kenntnis der terebellomorphen Polychaeten. Zoologiska bidrag från Uppsala, 5, 39–258.

    Hutchings, P. & Avery, L. (2003) The Terebellidae, Trichobranchidae, and Pectinariidae (Polychaeta: Terebellidae) of the Dampier Archipelago, Western Australia. In: Wells, F.E., Walker, D.I. & Jones, D.S. (Eds.), The Marine Flora and Fauna of Dampier, Western Australia. Western Australian Museum, Perth, pp. 425–451.

    Hutchings, P. & Peart, R. (2002) A review of the genera of Pectinariidae (Polychaeta) together with a description of the Australian Fauna. Records of the Australian Museum, 54, 99–127.

    Imajima, M. & Hartman, O. (1964) The polychaetous annelids of Japan. Occasional Papers of the Allan Hancock Foundation, 26, 1–452.

    Malmgren, A.J. (1866) Nordiska Hafs-Annulater. Öfversigt af Königlich Vetenskapsakademiens förhandlingar, 22, 51–110.

    Nishi, E., Matsuo, K., Kazama-Wakabayashi, M., Mori, A., Tomioka, S., Kajihara, H., Hamaguchi, M., Kajihara, N. & Hutchings, P. (2014) Partial revision of Japanese Pectinariidae (Annelida: Polychaeta), including redescriptions of poorly known species. Zootaxa, 3895 (3), 433–445.

    Okuda, S. (1936) Polychaetous annelids from Toyama Bay and its adjacent waters. I. Polychaeta Sedentaria. Bulletin of the Biogeographical Society of Japan, 6, 147–157.

    Paik, E.I. (1982) Taxonomic studies on polychaetous annelids in Korea. Research Bulletin of the Hyosung Women's University, 24, 745–913.

    Sun, Y. & Qiu, J.W. (2012) A new species of Lagis (Polychaeta: Pectinariidae) from Hong Kong. Zootaxa, 3264, 61–68.