Copelatus sociennus Balfour-Browne, 1952 (Fig. 4) Material examined: 1♂, Kalyani Revu Waterfall (13°2'49.2''N, 78°42'20.16''E), 3.xii.2022, Leg.: J. Deepa & S. Shankar, Reg. No. FBRC /ZSI/INS/3530. Distribution: Oriental (India [AP, TS, UK], Sri Lanka); Palaearctic (China) (Ghosh & Nilsson, 2012; Sayali et al., 2018; Deepa et al., 2022a). Remarks. Copelatus sociennus was reported from Bangalore, Karnataka as C. bangalorensis (Vazirani, 1970), later synonymized with C. sociennus (Sayali et al., 2018) based on the type from China and India.

Published as part of Shankar, Shiva, Kumar, Devadoss, Deepa, Jaiswal, Madasamy, Karuthapandi, Jadhav, Shrikant & Kunte, Kalyani B., 2023, Aquatic beetles (Insecta, Coleoptera) of Koundinya wildlife sanctuary, Andhra Pradesh, India, pp. 449-467 in Journal of Insect Biodiversity and Systematics 9 (3) on page 452, DOI: 10.52547/jibs.9.3.449, http://zenodo.org/record/17022023