• Animal Systematics, Evolution and Diversity
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• v.14 no.4
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• pp.357-360
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• 1998

A new species of the genus Nemoura is described from Korea. Nemoura gemma sp. n. is close to Nemoura jezoensis Okamoto and Nemoura alaica Zhiltzova, but can be distinguished by the entire shape, dorsal sclerite, and the presence of spines on ventral sclerite of epiproct, and the existence of cercal hooks.

• Korean Journal of Ecology and Environment
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• v.43 no.1
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• pp.19-23
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• 2010

Life cycle and secondary production of Nymphs of Nemoura gemma Ham and Lee were estimated by using specimens collected from a stream in Mt. Jumbong in the central Korean peninsula. N. gemma in the study stream was univoltine. Youngest nymphs were collected in April. They appeared to grow continuously until the emergence in early spring next year. The cohort production interval for the species was estimated as 399 days. The annual secondary production (ash free dry weight) estimated by removal-summation and the size-frequency methods were 582 and $786\;mg\;m^{-2}\;yr^{-1}$, respectively. Gut content analysis showed that N. gemma was a shredder.