Abstract
The male of Sclerocypris tuberculata (Methuen), thus far unknown, is here described. Relying on the morphology of the copulatory appendages and of the prehensile palps, it appears that this taxon belongs to a separate species group, together with S. zelaznyi and perhaps also S. sarsi. There are some interesting sexual dimorphic characters in the valve morphology: males have shorter valves with a dorsal margin which runs nearly parallel to the ventral one (more elongated valves with sloping dorsal margin in females) and there is lobe-like projection of the valve margin on the ventro-caudal corner of the LV in females which is lacking in the male. Furthermore, the female genital region has a very aberrant morphology, and all specimens from the present collection possess the tuberculated and noded valves.
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Martens, K. Description of the male of Sclerocypris tuberculata (Methuen, 1910) (Crustacea, Ostracoda, Megalocypridinae). Hydrobiologia 218, 127–131 (1991). https://doi.org/10.1007/BF00006785
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DOI: https://doi.org/10.1007/BF00006785