author(s)
Shimantini Borkataki, Badal Bhattacharyya, Sudhansu Bhagawati, Ritu Ranjan Taye and Himangshu Mishra

abstract
Studies on aquatic insect fauna were carried out at the largest river island of the world, Majuli during 2016-17. Seasonal surveys conducted during pre monsoon, monsoon, post monsoon and winter covering 60 sampling sites revealed the occurrence of a wide array of aquatic insects. Altogether 48 aquatic insect species belonging to 6 orders and 20 families were recorded. At order level, Odonata was found to be the most dominant order (47.92%) with the highest numbers of species (23) followed by Coleoptera and Hemiptera (18.75% abundance with 9 species each). Comparatively, only few aquatic insect species were registered under Ephemeroptera (6.25%, 3), Tricoptera (4.17%, 2) and Diptera (4.17%, 2).