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A review of Leptocaris including a description of L. ryukyuensis sp. nov. (Copepoda: Harpacticoida: Darcythompsoniidae)

Published online by Cambridge University Press:  06 December 2011

Sung Joon Song
Affiliation:
National Park Research Institute, Namwon-si, Jeollabuk-do 590-811, Korea
Hans-Uwe Dahms
Affiliation:
Green Life Science Department, College of Convergence, Sangmyung University, Seoul 110–743, Korea
Jong Seong Khim*
Affiliation:
Division of Environmental Science and Ecological Engineering, Korea University, Seoul 136–713, Korea
*
Correspondence should be addressed to: J.S. Khim, Division of Environmental Science and Ecological Engineering, Korea University, Seoul 136–713, Korea email: jongseongkhim@korea.ac.kr

Abstract

We provide a review on scientific contributions concerned with Leptocaris (Harpacticoida: Copepoda) that includes the zoogeography, ecology, biology, and morphology of this genus. A tabular key is given to aid in the identification of the ignavus-group. Leptocaris ryukyuensis sp. nov. is included on the basis of specimens collected from Akeijima sandy beach of the Ryukyu Islands in Japan. The new species can be distinguished from its congeners by an abexopodal seta and 3 exopodal setae on A2, a barbed inner seta on the proximal, endopodal segment of female P1 to P3, setae of the caudal ramus (setae I and II are very small, and the basal seta is transformed to a big spine), and modified inner setules of P2 enp-2 and P3 enp-2 in the males. The new species belongs to the ignavus-group established by Kunz (1994) and is the third species of the genus Leptocaris in East Asia.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2011

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References

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A review of Leptocaris including a description of L. ryukyuensis sp. nov. (Copepoda: Harpacticoida: Darcythompsoniidae)
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