Pisidia gordoni ( Johnson, 1970 )

Silambarasan, Krishnan, Kar, Annada Bhusan, Prasad, Gummadi Venkata Ankineedu, Pattnayak, Sujit Kumar, Das, Pratyush, Reddy, Dwarampudi Bhami & Ramalingam, Lakshmana Perumal, 2023, On some commensal anomuran and brachyuran crabs (Crustacea: Decapoda) off Visakhapatnam, Northwestern Bay of Bengal, Zootaxa 5325 (4), pp. 541-555 : 546

Pisidia gordoni ( Johnson, 1970)

( Fig. 3E )

Restricted synonymy: Porcellana (Pisidia) gordoni Johnson, 1970: 29–31 , fig. 3. Pisidia gordoni .— Haig, 1973: 283.— Haig, 1978: 707.— Haig, 1981: 277.— Tirmizi et al., 1989: 34, fig. 21.— Morgan, 1990:

32.— Yang & Sun, 1990: 4, figs. 5, 6.— Haig, 1992: 318, fig.14.— Komai, 2000: 366.— Siddiqui & Kazmi, 2003: 88.— Patel et al. 2022: 37.

Material examined. FSI/ CRUST: 235, 1 male (CL 5.2 mm, CW 4.6 mm), 18°14.0’N, 84°10.1’E, 42–43 m, on desmosponges, coll. K. Silambarasan, 15 December 2020 .

Distribution. Delagoa Bay, Mozambique, Madagascar, Red Sea, Gulf of Aden and Gulf of Iran, Hong Kong, Singapore, Java, Sri Lanka and tropical Australia ( Haig 1981); India ( Patel et al. 2022); recorded here for the first time reported from Bay of Bengal.

Commensalism. This species is usually observed in lower intertidal areas, exclusively inhabiting the cavity of Desmospongiae. In the present study, P. gordoni was collected from the Desmospongiae on the northeast coast of India at a depth of 42– 43 m. Similarly, Haig (1966c) also reported the species from around 50 m depth. Hiller et al. (2010) collected P. gordoni from under stones of the lower intertidal zone of St George Island, Goa. Similarly, Beleem et al. (2017) also reported P. hendersoni from cavities of yellow sponges from intertidal zone of 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 being covered with plumose setae ( Hiller et al. 2010).

Figures

FIGURE 3. Anomura associated with cnidarians and poriferans collected from Northwestern Bay of Bengal: A, Allogalathea elegans (Adams & White, 1848); B, Petrolisthes lamarckii (Leach, 1820); C, Porcellanella triloba White, 1851; D, Polyonyx hendersoni Southwell, 1909; E, Pisidia gordoni (Johnson, 1970).