Itocyclops, a New Genus Proposed for Speocyclops Yezoensis (Copepoda: Cyclopoida: Cyclopidae)

Abstract We redescribe Speocyclops yezoensis Ito on the basis of specimens from Japan and from Alaska and Tennessee, U.S.A. The combination of the segmentation of the swimming legs; the lack of dimorphism in the structure of the swimming legs, except for the modified terminal spine of the leg 3 endo...

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Bibliographic Details
Published in:Journal of crustacean biology 2000-08, Vol.20 (3), p.589-596
Main Authors: Reid, Janet W, Ishida, Teruo
Format: Article
Language:English
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Summary:Abstract We redescribe Speocyclops yezoensis Ito on the basis of specimens from Japan and from Alaska and Tennessee, U.S.A. The combination of the segmentation of the swimming legs; the lack of dimorphism in the structure of the swimming legs, except for the modified terminal spine of the leg 3 endopodite in the males of some populations; the partly fused proximal segment of leg 5; and, in the female, the peculiar structure of the seminal receptacle provide grounds to propose a new genus Itocyclops to accommodate this taxon. A new record from Tennessee is the first from the eastern U.S.A.
ISSN:0278-0372
1937-240X
DOI:10.1163/20021975-99990076