Benthomodiolus geikotsucola n. sp. : A Mussel Colonizing Deep-sea Whale Bones in the Northwest Pacific (Bivalvia: Mytilidae)

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  • 北西太平洋深海の鯨骨上に群生しているイガイ科の新種ゲイコツマユイガイ

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A new mytilid mussel found colonizing a whale skeleton at a depth of 4020 m on the Torishima Seamount in the Northwest Pacific is described. It is the third named species in the genus Benthomodiolus Dell, 1987. Only minor superficial characters separate it from the two other known species; these are a lack of both periostracal hairs and radial lines and the fact that this new taxon is the only species in the genus living attached to whale bones. In addition, however, the morphology of the byssal muscles in this species is different from the other two.

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