A new tree-spider crab of the genus Leptarma (Brachyura, Sesarmidae) from mangroves in Kerala, India

In: Crustaceana
Peter K. L. NgLee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117377, Republic of Singapore

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Suvarna S. DeviDepartment of Aquatic Biology & Fisheries, University of Kerala, Kariavattom, Thiruvananthapuram — 695581, Kerala, India

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A new species of long-legged sesarmid crab of the Leptarma leptosoma (Hilgendorf, 1869) species-group is described from mangroves in south-western India. In the general carapace features as well as in the proportions of the long ambulatory legs, L. biju n. sp. is most similar to L. gracilipes (Li, Rahayu & Ng, 2018), from eastern Indonesia and Papua New Guinea, but can easily be distinguished by the structure of the gonopods as well as the leg proportions.

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