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1 November 2011 A New Genus and Two New Species of Peltogastridae (Crustacea: Cirripedia: Rhizocephala) Parasitizing Hermit Crabs from Okinawa Island (Ryukyu Archipelago, Japan), and their DNA-barcodes
Ryuta Yoshida, Masayuki Osawa, Mamiko Hirose, Euichi Hirose
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Abstract

A new genus and two new species of Peltogastridae, Peltogaster postica sp. nov. and Ommatogaster nana gen. et sp. nov., are described from Okinawa Island, Ryukyu Islands, southwestern Japan. The two new rhizocephalans were found to be parasitic on the estuarine hermit crabs, Pagurus minutus Hess, 1865 and Diogenes leptocerus Forest, 1956, respectively. Peltogaster postica sp. nov. is allied to P. curvata Kossmann, 1874, P. paguri Rathke, 1842, and P. reticulata Shiino, 1943, but is distinguished by its relative length and internal and external structures of the mature externa. Ommatogaster gen. nov. is established for the present new species O. nana based on the morphologies of the visceral mass of the externa and the presence of a nauplius eye in the larvae. Partial COI sequences were obtained from the two new species and one known species, Dipterosaccus indicus Van Kampen and Boschma, 1925, to test the possible usefulness of the sequences as tags for species identification.

© 2011 Zoological Society of Japan
Ryuta Yoshida, Masayuki Osawa, Mamiko Hirose, and Euichi Hirose "A New Genus and Two New Species of Peltogastridae (Crustacea: Cirripedia: Rhizocephala) Parasitizing Hermit Crabs from Okinawa Island (Ryukyu Archipelago, Japan), and their DNA-barcodes," Zoological Science 28(11), 853-862, (1 November 2011). https://doi.org/10.2108/zsj.28.853
Received: 1 December 2010; Accepted: 1 May 2011; Published: 1 November 2011
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