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Himalayapotamon chambaensis, a new species of freshwater crab (Crustacea: Brachyura: Potamidae) from Himachal Pradesh, India



A new species of freshwater crab of the genus Himalayapotamon Pretzmann, 1966, is described based on specimens collected from various localities in Chamba District in Himachal Pradesh state, northern India. Himalayapotamon chambaensis n. sp. can be distinguished from congeners by several carapace and gonopod characters: a short median longitudinal granular ridge behind the frontal margin which reaches to the epigastric regions, the terminal segment of the male first gonopod is long and distinctly bent outwards, and the male second gonopod has a long and distally coiled distal segment. An identification key to all the 12 species in the genus is provided.



Crustacea, taxonomy, crustacea, new species, identification key, India

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Alcock, A. (1909a) Diagnoses of new species and varieties of freshwater crabs. No.13. Record Indian Museum, 3 (3), 243–252.

Alcock, A. (1909b) Diagnoses of new species and varieties of freshwater crabs. Record Indian Museum, 3 (4), 375–381.

Alcock, A. (1910) The Indian Freshwater CrabsPotamonidae, Catalogue of the Indian Decapod Crustacea in the collection of the Indian Museum. Part 1. Brachyura. Fasc. II. Trustees of the Indian Museum, Calcutta, 135 pp., 14 pls.

Bott, R. (1966) Potamiden aus Asien (Potamon Savigny and Potamiscus Alcock) (Crustacea, Decapoda). Senkenbergia biologica, 47 (6), 469–509.

Bott, R. (1970) Die Süßwasserkrabben von Europa, Asien, Australien und ihre Stammesgeschichte. Eine Revision der Potamoidea und der Parathelphusoidea. (Crustacea, Decapoda). Abhandlungen der senckenbergischen Naturforschenden, 526, 1–338, pls. 1–58.

Brandis, D. (2000) The taxonomic status of the genus Potamiscus Alcock, 1909 (Decapoda: Brachyura: Potamidae). Senckenbergiana biologica, 80, 57–100.

Brandis, D. (2001) On the taxonomy and biogeography of Potamon atkisonianum (Wood-Mason, 1871) and Potamon (Potamon) ) emphyseteum (Alcock, 1909). Hydrobiologia, 452, 89–100.

Brandis, D. & Sharma, S. (2005) Taxonomic revision of the freshwater crab fauna of Nepal with description of a new species (Crustacea, Decapoda, Brachyura, Potamoidea and Gecarcinucoidea). Senkenbergia biologica, 85 (1), 1–30.

Bouvier, E.L. (1918) Sur quelques crustacés décapodes recueillis par M. Guy Babault dans les eaux douces de l’Inde Anglaise. Bulletin du Muséum national d’Histoire naturelle, Paris, 1er Série, 24, 386–393.

Davie, P.J.F., Guinot, D. & Ng, P.K.L. (2015) Anatomy and functional morphology of Brachyura. In: Castro, P., Davie, P.J.F., Guinot, D., Schram, F.R. & Vaupel Klein, C.V. (Eds.), Treatise on Zoology–Anatomy, Taxonomy, Biology. The Crustacea, Decapoda: Brachyura, Part 1, 9C–I, pp. 11–163.

Mitra, S. (2015) Checklist of the freshwater crabs of Indian Himalaya, its threats and conservation. In: Gupta, V.K. & Verma, A.K. (Eds.), Animal diversity, natural history and conservation. Daya Publishing House, New Delhi, pp. 133–164.

Ng, P.K.L., Guinot, D. & Davie, P.J.F. (2008) Systema Brachyurum: Part 1. An annotated checklist of extant brachyuran crabs of the world. Raffles Bulletin of Zoology, 17 (Supplement), 1–286.

Pati, S.K. & Singh, S. (2017) A new species of freshwater crab of the genus Himalayapotamon Pretzmann, 1966 (Decapoda, Brachyura: Potamidae: Potaminae) from Uttarakhand, northern India. Zootaxa, 4237 (1), 191–200.

Pretzman, G. (1963) Über einige süd und ost-asiatische Potamoniden. Annalen des Naturhistorischen Museums in Wien, 66, 361–372.

Pretzman, G. (1966a) Süsswassserkrabben aus dem westlichen Himalayagebiet. Annalen des Naturhistorischen Museums in Wien, 69, 299–303, pls. 4.

Pretzman, G. (1966b) Potamidenaus Asien (Potamon Savignyi and Potamiscus Alcock) (Crustacea: Decapoda). Senckenbergia biologica, 47, 469–509, 6 pls., 32 figs.

Rathbun, M.J. (1904) Les crabes d’eau douce (Potamonidae). Nouvelles Archives du Musseum d’Histoire Naturelle, Paris, Série 4, 6, 225–312, pls. 9–18.

Wood-Mason, J. (1871) Contribution to Indian Carcinology. Part 1. Indian and Malayan Telphusidae. Journal of the Asiatic Society of Bengal, 40 (2), 189–207, 449–454.

Yeo, D.C.J. & Ng, P.K.L. (2007) On the genus “Potamon” and allies in Indo-China (Crustacea: Decapoda: Potamidae). Raffles Bulletin of Zoology, 16 (Supplement), 273–308.



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