A number of gall forming insects have been recirded previously on Mangifera india Linn. in various parts of the World. However, very few of them have been observed as serious pests. In Bombay state with exception if the Cecidamyiid flies - Allasomyia tenuispatha - noted by the author as a serious pest of mango, practically no importance. During January and Febriuary 1954, at Dharwar, in Bombay Karnatak. Another gall fly dasyneura mangiferae Felt was noted for the first time, infedting mango flower buds to an extent to 80-90% in a single florenscence.The infested flower bud instead of dveloping in a normal way, presented a charastic gal like swelling .