A new species of the genus Rhipidogammarus, Rh. variicauda, is described from phreatic fresh waters of two wells in the western part of the isle of Mallorca (Mediterranean). The new species has a highly variable third uropod: about 80% of the specimens possesses a typically “parviramus” appendage, but 20% shows the “variiramus” condition. Apparently, a classification based on the structure of the third uropod should be used with caution.

Bijdragen tot de dierkunde

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Naturalis journals & series

Stock, J. H. (1978). A remarkably variable phreatic amphipod from Mallorca, Rhipidogammarus variicauda n. sp., in which the third uropod can assume the “parviramus” or the “variiramus” condition. Bijdragen tot de dierkunde, 48(1), 89–95.