Thysanozoon brocchii ( Risso, 1818 )

Padmanaban, P., Kumar, A. Anand, Kumar, R. Rajendar, Surendar, C. & Vanishree, J., 2020, On the Polyclads from the Gulf of Mannar Biosphere Reserve with new records, Records of the Zoological Survey of India 120 (4), pp. 445-453 : 450

8. Thysanozoon brocchii ( Risso, 1818) ( Figure 12&13 )

Material examined: ZSI/ MBRC /PL-351, 1 ex, Thalayari Is., Keelarakai, (9°17’93.29”N 78°89’89.41”E), 25.xii.2018, from branching colonies of dead corals .

Diagnosis: Body brown to cream in colour, dorsal surface covered with yellowish brown to dark brown colored papillae, papillae are cylindrical, black median longitudinal stripe mostly distinct. Pseudotentacles are erect, ear like, cream–brown with white tip.

Distribution: Thalayari Is., GoM, Ratnagiri, Maharashtra; Dwarka, Gujarat. Elsewhere: Brazil, Japan and New Zealand. It was also reported from Canary Islands Argentina from northeastern and south-eastern Brazil.

Remarks: This species was recently reported from Ratnagiri and Dwarka, west coast of India (Pilate & Apte, 2017). The present report forms its second report from India and first record from the Gulf of Mannar.

Figures

Figure 12&13. Thysanozoon brocchii (Risso, 1818).