Nauplius THE JOURNAL OF THE BRAZILIAN CRUSTACEAN SOCIETY e-ISSN 2358-2936 www.scielo.br/nau www.crustacea.org.br 1 Nauplius, 25: e2017030 CORRESPONDING AUTHOR Kauresh Vachhrajani kauresh@gmail.com SUBMITTED 4 February 2017 ACCEPTED 2 May 2017 PUBLISHED 27 November 2017 DOI 10.1590/2358-2936e2017030 CORRESPONDING AUTHOR Kauresh Vachhrajani orcid.org/0000-0002-6840-4752 On the distribution range of Chaenostoma sinuspersici (Naderloo & Türkay, 2011) (Decapoda: Brachyura: Macrophthalmidae) in Indian waters Jigneshkumar N. Trivedi 1 Kauresh D. Vachhrajani 1 1 Marine Biodiversity and Ecology Lab., Department of Zoology, Faculty of Science, Te Maharaja Sayajirao University of Baroda, Vadodara-390002, Gujarat, India. ZOOBANK htp://zoobank.org/urn:lsid:zoobank.org:pub:5CBAF7D7-265F-4352- B850-1C290A9F867A ABSTRACT Chaenostoma sinuspersici (Naderloo & Türkay, 2011) (Macrophthalmidae) is recorded for the frst time in Indian waters. Te species has so far been only reported from the western Indian Ocean and Arabian Sea. KEY WORDS Range extension, species complex, rocky shore, Gujarat, frst record. Te genus Chaenostoma (Stimpson, 1858) of family Macrophthalmidae is composed of small sized crabs which are common on the rocky shores of tropical and subtropical regions (Litulo, 2005; Davie, 2012). Chaenostoma currently contains six species: Chaenostoma boscii (Audouin, 1826), Chaenostoma punctulatus (Miers, 1884), Chaenostoma sinuspersici (Naderloo & Türkay, 2011), Chaenostoma java Naderloo, 2013, Chaenostoma orientale Stimpson, 1858 and Chaenostoma crassimanus Stimpson, 1858 (Stimpson, 1858; Ng et al. 2008; Naderloo and Türkay, 2011; Naderloo, 2013; Shih et al. , 2015, Teng et al., 2016). Another species, Chaenostoma lisae (Poupin & Bouchard, 2010) is now considered as junior synonym of C. crassimanus (Shih et al., 2015; Teng et al., 2016). Chaenostoma sinuspersici was described from Persian Gulf and has a widespread distribution in Indo-West Pacifc (Naderloo and Türkay, 2011; Teng et al., 2016). In the present study, C. sinuspersici is reported frst time from Indian waters. Te following abbreviations are used throughout the text: G1 = male frst gonopod, CL= carapace length, and CW = carapace width. All measurements are given in millimeters (mm). auplius SHORT COMMUNICATION