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The present investigation was carried out to study the fauna of aquatic beetles of Koundinya wildlife sanctuary (India). A total of forty two species belonging to four families was recorded. The highest number of species was found in the family Dytiscidae followed by Hydrophilidae, Gyrinidae and Noteridae. All the species are recorded for the first time from the wildlife sanctuary and 9 species are new from the state of Andhra Pradesh.

The present study reports an aquatic hemipteran species Ptilomera agriodes (Schmidt, 1926) distributed in different streams and waterfalls of Eastern Ghats of Andhra Pradesh and Telangana for the first time.