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Description of the male of Upogebia miyakei from Ryukyu Islands, Japan (Decapoda: Thalassinidea: Upogebiidae)

Published online by Cambridge University Press:  15 February 2008

Yuriko Hirano  and
Masayuki Saigusa
Yuriko Hirano*
Affiliation:
Graduate School of Natural Science and Technology, Okayama University, 3-1-1, Tsushima, Okayama, 700-8530, Japan
Masayuki Saigusa
Affiliation:
Graduate School of Natural Science and Technology, Okayama University, 3-1-1, Tsushima, Okayama, 700-8530, Japan
*
Correspondence should be addressed to: Yuriko HiranoGraduate School of Natural Science and Technology Okayama University3-1-1, Tsushima Okayama 700-8530Japan email: dns17405@cc.okayama-u.ac.jp
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Abstract

The small upogebiid shrimp, Upogebia miyakei, was originally described from a female collected from Ishigaki-jima Island, Ryukyu Islands, southern Japan. However, no male specimen has been reported since the discovery of the holotype. During surveys at Iriomote-jima Island and its type locality, both females and males of U. miyakei were collected from the intertidal zone. Based on this material a full description of the male is given, and comparison with the female reveals the sexual dimorphic characteristics. The palm of the first pereiopod of male specimens is about 1.5 times wider than that of females. In male specimens, one or two spines are present on the dorsal margin of the palm of the first pereiopod, while three to six sharp spines are found on female specimens. This species is compared here with Upogebia lincolni from Java, Indonesia.

Keywords

DecapodaRyukyu Islandssexual dimorphismThalassinideaUpogebia miyakei
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 88 , Issue 1 , February 2008 , pp. 125 - 131
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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