Cysticolous Myzostomida, Notopharyngoides platypus from Comanthina nobilis (Echinodermata : Crinoidea), at Kushimoto, Honshu, Japan

  • Grygier Mark J.
    Tropical Biosphere Research Center (Sesoko Station), University of the Ryukyus:(Present address)Lake Biwa Museum
  • Nomura Keiichi
    Kushimoto Marine Park Center:(Present address)Yaeyama Marine Park Research Station

Bibliographic Information

Other Title
  • Cysticolous Myzostomida Notopharyngoide

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Abstract

About 20% of individuals of the comatulid crinoid Comanthina nobilis (Carpenter, 1884) at Shionomisaki, the southernmost point of the island of Honshu, Japan, are infested by the cysticolous myzostomidan worm originally described as Myzostoma platypus Graff, 1887. Up to four cysts per host occur. This parasite had been collected previously only in the Philippines by the 'Challenger' Expedition, from the same host species. The present specimens differ in having a few to many supernumerary marginal cirri and up to six (versus three to five) separate tabular outgrowths in a row along the ventral midline. It is proposed to reassign this species as the most plesiomorphic member of the genus Notopharyngoides Uchida, 1992.

Journal

  • Species Diversity

    Species Diversity 3 (1), 17-24, 1998

    The Japanese Society of Systematic Zoology

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