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First Record of the Genus and Species, Rhopalaea crassa(Ascidiacea: Aplousobranchia: Diazonidae) in Korea

  • Received : 2021.10.17
  • Accepted : 2021.10.20
  • Published : 2021.10.31

Abstract

The genus Rhopalaea Philippi, 1843 is firstly recorded as a Korean fauna. It is distinct from other genera of Diazonidae in order Aplousobranchia by having solitary individuals or at most two embedded in a common test. Solitary ascidian, Rhopalaea crassa (Herdman, 1880), is also newly reported from Korean waters. Rhopalaea crassa has a club-shaped body, developed thorax, a vertical gut loop and yellow patches in transparent test. Specimens of R. crassa examined in this study were collected from the subtidal zone of Jeju-do Island by scuba diving. In this paper, detailed descriptions and photographs of specimens and living forms of R. crassa are provided.

Keywords

Acknowledgement

This research was supported by National Marine Biodiversity Institute of Korea (2021M01100) and the Natural History Museum of Ewha Womans University in part.

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