Megaglena sivarubani sp. nov. is described based on the nymphs from the Puliyuthu falls of Tamil Nadu, Southern India. The number of species of Megaglena Peters Edmunds is now expanded to three and it is the first record of the genus from the Tamil Nadu part of Southern Western Ghats. Megaglena sivarubani sp. nov. can be distinguished from Indian species M. agasthiya Vasanth, Subramanian Selvakumar by the body size of the nymphs, shape of the labial palp segment III, and by the setation of foretibia. The morphological variations between all the known species of Megaglena are discussed and summarized.
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