On some commensal anomuran and brachyuran crabs (Crustacea: Decapoda) off Visakhapatnam, Northwestern Bay of Bengal Author Silambarasan, Krishnan Fishery Survey of India, Beach Road, Visakhapatnam, Andhra Pradesh, India Author Kar, Annada Bhusan Fishery Survey of India, Beach Road, Visakhapatnam, Andhra Pradesh, India Author Prasad, Gummadi Venkata Ankineedu Fishery Survey of India, Beach Road, Visakhapatnam, Andhra Pradesh, India Author Pattnayak, Sujit Kumar Fishery Survey of India, Beach Road, Visakhapatnam, Andhra Pradesh, India Author Das, Pratyush Fishery Survey of India, Beach Road, Visakhapatnam, Andhra Pradesh, India Author Reddy, Dwarampudi Bhami Fishery Survey of India, Beach Road, Visakhapatnam, Andhra Pradesh, India Author Ramalingam, Lakshmana Perumal Fishery Survey of India, New Fishing Jetty, Sasson Dock, Colaba, Mumbai, India text Zootaxa 2023 2023-08-10 5325 4 541 555 http://dx.doi.org/10.11646/zootaxa.5325.4.5 journal article 272427 10.11646/zootaxa.5325.4.5 59cc84b2-3357-4ac5-a61d-0d7d5d032977 1175-5326 8243713 086F3349-9C7C-4AAD-986F-FF0CE69CDF1E Polyonyx hendersoni Southwell, 1909 ( Fig. 3D ) Restricted synonymy: Polyonyx hendersoni Southwell, 1909: 117 , figs. 6–9.— Gravely, 1927: 141 , pl. 20 fig. 11.— Johnson, 1958: 98 , 112.— Haig, 1974: 380 .—Sankolli, 1966: 309, fig. 8.— Tirmizi et al. , 1982: 3 , fig. 8, pl. VIII.— Patel et al . 2022: 37 . Material examined. FSI/ CRUST : 234, 1 female (CL 6.1 mm , CW 6.6 mm ), 18°14.0’N , 84°10.1’E , 42–43 m , on desmosponges, coll. K. Silambarasan , 15 December 2020 . Distribution. Sri Lanka and Pakistan ( Southwell 1909 ); India ( Patel et al. 2022 ). Now recorded again from India after a long gap of 94 years from Visakhapatnam, Bay of Bengal. Commensalism. This species usually observed in intertidal areas inhabiting exclusively the water ducts of Desmospongiae. In the present study, P. hendersoni was collected from the Desmospongiae on the northeast coast of India . Hiller et al. (2010) collected P. hendersoni from white sponges from intertidal areas of St George Island, Goa. Similarly, Beleem et al. (2017) also reported P. hendersoni from cavities of yellow sponges from the intertidal zone of the Gulf of Kutch, Gujarat . Remarks. This species is endemic to the Indian Ocean and closely resembles Polyonyx splendidus ( Sankoli, 1963 ) , which also occurs in the cavities of sponges. Polyonyx splendidus differs from P. hendersoni by the meral lobe of the chelipeds, carpus and chelipeds covered with plumose setae ( Hiller et al. 2010 ).