Kobayashi, I.; Yamamoto, M.; Fujiwara, Y.; Tsuchida, S.; Fujita, T. (2022). First Record of the Family Myxasteridae (Asteroidea: Velatida) from Western North Pacific with Description of a New Species of Asthenactis. Species Diversity. 27(2): 251-258.

436713

10.12782/specdiv.27.251 [view]

Kobayashi, I.; Yamamoto, M.; Fujiwara, Y.; Tsuchida, S.; Fujita, T.

2022

27(2): 251-258

Publication

We describe a new species of the rare and deep-sea family Myxasteridae from Japanese waters. This is the first record of this family in the western North Pacific. The new species, Asthenactis agni n. sp., differs from all congeners in having seven arms with an R/r ratio of 7.2, primary radial plates with convex distal edges, and two to three actinolateral spines that are up to 4.7 mm long.

Japan

Abyssal, Deep-Sea
Systematics, Taxonomy

Asteroidea

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