A collection of crabs (Crustacea, Brachyura) from the southwestern coast of India, with a discussion of the systematic position of Nectopanope Wood-Mason in Wood-Mason & Alcock, 1891 (Euryplacidae)

Abstract

A report on the brachyuran crabs collected from the southwestern coast of India by the Indian research vessel FORV Sagar Sampada is presented. The material consists of 13 species from three genera and five families, of which four are new records for India: Heteroplaxmaldivensis (Rathbun, 1902) (Euryplacidae), Cryptopodiacollifer Flipse, 1930 (Parthenopidae), Thalamitamacrodonta Borradaile, 1903 (Portunidae), and Paraxanthodescumatodes (MacGilchrist, 1905) (Xanthidae). The cruise also obtained the first known male of Nectopanoperhodobaphes Wood-Mason in Wood-Mason & Alcock, 1891 (type species of Nectopanope Wood-Mason in Wood-Mason & Alcock, 1891), and its characters show that it is in fact a member of the Euryplacidae Stimpson, 1871. The genus had previously been incorrectly classified in the Xanthidae MacLeay, 1838.

Spider crabs of the Samadinia pulchra complex (Crustacea: Decapoda: Epialtidae)

“…Despite the good collections of S. livermorii from the western and eastern Indian Ocean, none are yet known from intermediate localities, almost certainly an artefact of limited sampling at outer shelf and slope depths in the Indian region. Only in recent years have efforts to document the Indian deep-water crustacean fauna accelerated (e.g., Ahyong & Kumar, 2018;Devi et al, 2019;Ng et al, 2019;Macpherson et al, 2020;Padate et al, 2020Padate et al, , 2021Padate et al, , 2022, so it is likely that S. livermorii will eventually be found there. All known specimens of S. livermorii are from Indian Ocean localities.…”

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“…Despite the good collections of S. livermorii from the western and eastern Indian Ocean, none are yet known from intermediate localities, almost certainly an artefact of limited sampling at outer shelf and slope depths in the Indian region. Only in recent years have efforts to document the Indian deep-water crustacean fauna accelerated (e.g., Ahyong & Kumar, 2018;Devi et al, 2019;Ng et al, 2019;Macpherson et al, 2020;Padate et al, 2020Padate et al, , 2021Padate et al, , 2022, so it is likely that S. livermorii will eventually be found there. All known specimens of S. livermorii are from Indian Ocean localities.…”

Extension of geographical range and first record of Trizocarcinus Rathbun, 1914 (Brachyura: Euryplacidae) from the Western Tropical South Atlantic

“…Nauplius, 28: e2020022 inTroduCTion The family Euryplacidae Stimpson, 1871 is composed of marine crabs and its taxonomy was most recently revised by Castro and Ng (2010). The family currently comprises 15 genera found globally with a total of 32 recognized species (Castro and Ng, 2010;Ng et al, 2019). Members of this family occur on mud or gravel substrates between the continental shelf and the continental slope in depths from intertidal to 552 m (Castro and Ng, 2010).…”