First record of a freshwater crab, Maydelliathelphusa masoniana (Henderson, 1893) (Decapoda: Brachyura: Gecarcinucidae) from West Bengal, India

Main Article Content

Ram Krishna Das


The genus Maydelliathelphusa Bott, 1969 includes five species, M. masoniana (Henderson, 1893), M. edentula (Alcock, 1909), M. falcidigitis (Alcock, 1910), M. harpax (Alcock, 1909), and M. lugubris (Wood-Mason, 1871), and is endemic to India. Out of the five species, only Maydelliathelphusa lugubris (Wood-Mason, 1871) was reported from West Bengal previously. Present study reports the second species, M. masoniana (Henderson, 1893), from West Bengal, India for the first time.

Article Details

How to Cite
Das, R.K. 2021. First record of a freshwater crab, Maydelliathelphusa masoniana (Henderson, 1893) (Decapoda: Brachyura: Gecarcinucidae) from West Bengal, India. Journal of Threatened Taxa. 13, 13 (Nov. 2021), 20084–20089. DOI:
Short Communications


Alcock, A. (1910a). On the classification of the Potamonidae (Telphusidae). Records of the Indian Museum 5: 252–261.

Alcock, A. (1910b). Brachyura I, Fasc. II. The Indian fresh water crabs-Potamonidae. Catalogue of the Indian Decapod Crustacea in the collection of the Indian Museum. Calcutta, 135 pp, pls. 1–14.

Bott, R. (1970). Die Süßwasserkrabben von Europa, Asien, Australien und ihre Stammesgeschichte. Eine Revision der Potamoidea und Parathelphusoidea (Crustacea, Decapoda). Abhandlungen der Senckenbergischen aturforschenden Gesellschaft 526: 1–338.

Cumberlidge, N. (2008). Maydelliathelphusa masoniana. The IUCN Red List of Threatened Species. e. T134371A3946162. Downloaded on 23 May 2021.

Cumberlidge, N., P.K.L. Ng, D.C.J. Yeo, C. Magalhaes, M.R. Campos, F. Alvarez, T. Naruse, S.R. Daniels, L.J. Esser, F.Y.K. Attipoe, F-L. Clotilde-Ba, W. Darwall, A. McIvor, J.E.M. Baillie, B. Collen & M. Ram (2009). Freshwater crabs and the diversity crisis: Importance, threats, status, and conservation challenges. Biological Conservation 142: 1665–1673.

Deb, M. (1999). Crustacea: Decapoda: Crabs. In: State Fauna Series 3: Fauna of West Bengal, Zoological Survey of India 10: 345–403.

Harhoglu, M.M., A. Farhadi & A.G. Harhoglu (2018). A review of the freshwater crabs of Turkey (Brachyura, Potamidae). Fisheries & Aquatic Life 26: 151–158.

Henderson, J.R. (1893). A contribution to Indian carcinology. Transactions of the Linnean Society of London (Zoology), series 2(5): 325–458.

Kotwal, S. & K.K. Sharma (2020). Studies on crab diversity in the freshwater habitats of Jammu, J&K. International Journal of Life Sciences 8(2): 417–421.

Krishnamurthy, P. (1995). Crustacea: Decapoda. In: Himalayan ecosystem series: Fauna of Western Himalaya, Part I, Uttar Pradesh. Zoological Survey of India 1: 23

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

Pati, S.K. (2021). Two new species of freshwater crabs of the genus Potamiscus Alcock, 1909 (Brachyura: Potamidae) from Nagaland, northeastern India. Nauplius - The Journal of the Brazilian Crustacean Society 29: e2021006.

Valarmathi, K. (2018). Crustacea: Decapoda(Shrimps and crabs) In: Chandra, K., K.C. Gopi, D.V. Rao, K. Valarmathi & J.R.B. Alfred. Current status of freshwater faunal diversity in India. Zoological Survey of India, Ministry of Environment, Forest and Climate Change, Government of India.

Yeo, D.C.J., P.K.L. Ng, N. Cumberlidge, C. Magalhaes, S.R. Daniels & M.R. Campos (2008). Global diversity of crabs (Crustacea: Decapoda: Brachyura) in freshwater. Hydrobiologia 595: 275–286.