Four New Records of Brachyuran Crabs (Crustacea: Decapoda: Brachyura) from India
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Four New Records of Brachyuran Crabs (Crustacea: Decapoda: Brachyura) from India Jigneshkumar Trivedi 1
&
Santanu Mitra 2 & Pooja Patel 1 & Swapnil Gosavi 3 & Kauresh Vachhrajani 3
Received: 20 April 2020 / Revised: 18 August 2020 / Accepted: 19 August 2020 # Springer Nature Switzerland AG 2020
Abstract The present study is a part of long term ongoing study on brachyuran crab diversity of India. The specimens were collected from intertidal zone as well as from the fisheries by-catch captured using commercial trawler. The specimens were identified up to species level using standard literature. From the collection, four species of brachyuran crabs, Schizophrys pakistanensis Tirmizi & Kazmi, 1995 (Majidae), Macromedaeus voeltzkowi (Lenz, 1905) (Xanthidae), Pseudosesarma brehieri Ng, 2018 (Sesarmidae) and Ilyograpsus paludicola (Rathbun, 1909) (Macrophthalmidae) are first time reported from India. The present study records significant expansion in the distribution range of these species. The diagnostic characteristics and remarks on the taxonomy and distribution of each species are given in this paper. Keywords Range extension . Crustacea . Brachyura . Gujarat . West Bengal
Introduction The coastline of India is around 7516.6 km long (Ahmad 1972) that can be divided into two major regions: West coast and East coast. The coastal area of both coastal regions supports variety of marine habitats like rocky shore, sandy shores, mudflats, estuaries, mangroves and coral reef which support unique marine biodiversity. Amongst various decapod crustacean inhabiting coastal waters India, brachyuran crab diversity is studied well (Fabricius 1775; Henderson 1893; Alcock and Anderson 1894, 1899; Alcock 1895, 1898; Gravely 1927; Pillai 1951; Chhapgar 1957a, b; Deb 1998; Dev Roy 2013; Dev Roy and Nandi 2007, 2008, 2012; Beleem et al. 2019). Recently, Trivedi et al. (2018) compiled checklist of marine brachyuran crabs of India reporting 910 species belonging to 361 genera and 62 families and stated that east coast (803 species) of India is more diverse in as compared to west coast (446 species). * Jigneshkumar Trivedi [email protected] 1
Department of Life Sciences, Hemchandracharya North Gujarat University, Patan, Gujarat, India
2
Zoological Survey of India, F.P.S. Building, 27 J. L. Nehru Road, Kolkata, West Bengal 700016, India
3
Marine Biodiversity and Ecology Laboratory, Department of Zoology, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
Trivedi et al. (2018) stated that main reason behind high diversity of marine brachyuran crabs from east coast as compared to west coast could be presence of areas like Chilka lake, Gulf of Mannar and Andaman and Nicobar Islands which are studied extensively by several researchers for brachyuran crab diversity (Kemp 1915; Gravely 1927; Dev Roy and Das 2000; Jeyabaskaran et al. 2000). The present study is a part of long term ongoing study (2009 onwards) on brachyuran crab diversity of India. In this long term study, different coastal area
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