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
Новый род и два новых вида Peltogastridae (Crustacea: Cirripedia: Rhizocephala), паразитирующие на раках-отшельниках с острова Окинава (Рюкю, Япония), и их ДНК-баркоды
2011-10-28
SCID: 54.1/5kgznrkt
Discuss with AI
COI DNA barcodesOmmatogaster nanaPeltogaster posticaPeltogastridaeRhizocephala
Figures from the paper
Abstract (AI)
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.
Key Findings
1
A new genus, Ommatogaster gen. nov., is established for a newly described rhizocephalan species, Ommatogaster nana gen. et sp. nov., from Okinawa Island.
2
Ommatogaster nana is differentiated by the morphology of the externa's visceral mass and presence of a nauplius eye in larvae, supporting establishment of the new genus.
3
Partial COI (cytochrome oxidase I) sequences were obtained from the two new species and Dipterosaccus indicus to evaluate COI usefulness as species-identification tags.
4
Peltogaster postica sp. nov. is morphologically allied to P. curvata, P. paguri, and P. reticulata but distinguished by relative length and internal/external structures of the mature externa.
5
Two new peltogastrid species are described: Peltogaster postica sp. nov. and Ommatogaster nana gen. et sp. nov., parasitizing hermit crabs in Okinawa.
Research Object
Two new rhizocephalan crustaceans (Peltogaster postica sp. nov. and Ommatogaster nana gen. et sp. nov.) parasitizing estuarine hermit crabs from Okinawa Island
Research Subject
Taxonomic description, distinguishing morphological characters (externa structures, visceral mass morphology, larval nauplius eye), host associations with Pagurus minutus and Diogenes leptocerus, and partial COI DNA-barcodes for species identification
Publication Details
Publication Date
2011-10-28
Journal
Publisher
ISSN
Access Type
Author Information
Download PDF
Subscribe to digest