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Heptageniidae from Corsica and Sardinia.Rhithrogena nuragica n. sp., R. eatoni Esben-Petersen 1912,and R. insularis Esben-Petersen 1913 (Ephemeroptera)
Published online by Cambridge University Press: 15 August 2009
Abstract
Imagines, nymphs and eggs of Rhithrogena nuragica n. sp. are described from Gennargentu, Sardinia. Nymphs and eggs of R. insularis Esb.-Pet. and R. eatoni Esb.-Pet. from Corsica are described for the first time. R. nuragica and R. insularis belong to the same species group, namely the insularis group, characterized mainly by the very peculiar tubercules on the egg chorion. Nymphs of this group have crenulated gills, femora with a median dark spot and plica on the first gill subtriangular, with a digitiform projection on the free corner. R. eatoni belongs to the alpestris group.
Keywords
- Type
- Research Article
- Information
- Annales de Limnologie - International Journal of Limnology , Volume 23 , Issue 2 , 1987 , pp. 87 - 94
- Copyright
- © Masson, 1987
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