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1 August 2000 ITOCYCLOPS, A NEW GENUS PROPOSED FOR SPEOCYCLOPS YEZOENSIS (COPEPODA: CYCLOPOIDA: CYCLOPIDAE)
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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.

Janet W. Reid and Teruo Ishida "ITOCYCLOPS, A NEW GENUS PROPOSED FOR SPEOCYCLOPS YEZOENSIS (COPEPODA: CYCLOPOIDA: CYCLOPIDAE)," Journal of Crustacean Biology 20(3), 589-596, (1 August 2000). https://doi.org/10.1651/0278-0372(2000)020[0589:IANGPF]2.0.CO;2
Received: 23 June 1999; Accepted: 21 March 2000; Published: 1 August 2000
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