Clione okhotensis T. Yamazaki & Kumahara, 2017

Description

A tiny sea angel reaching about 8 mm in body length. The body is barrel-shaped, with the head tentacles set so close together that there is almost no gap between them and the mouth. The wings (parapodia) are small. There are three pairs of short, stubby oral cones. Three ciliary bands encircle the body — one near the front, one across the middle, and one near the posterior end.

Distribution

Originally described from material taken in the southern Sea of Okhotsk.

Etymology

The specific epithet okhotensis refers to the Sea of Okhotsk, the type locality.

Remarks

A pelagic plankton-feeder belonging to the family Clionidae (shell-less pteropods, sea angels).

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References

• 奥谷喬司. (2017). わが国近海に見られる浮遊性巻貝類 VIII 浮遊性ウミウシ類・アサガオガイ類. うみうし通信. 95.
• Clione okhotensis, Yamazaki T. & Kuwahara T. (2017). Description of a new sea angel (Gastropoda: Gymnosomata) from the Sea of Okhotsk and the validity of Clione okhotensis. Journal of Molluscan Studies. 83(1): 19-26. https://doi.org/10.1093/mollus/eyw032
• ダルマハダカカメガイ Clione okhotensis (Yamazaki & Kuwahara, 2016), 奥谷喬司 (2017). わが国近海に見られる浮遊性巻貝類—VII 裸殻翼足類. うみうし通信 94: 8-9.