To entomologists in India the three species of mango Jassids—Idiocerus niveosparsus, I. atkinsoni and I. clypealis—are fairly well known, both on account of their wide distribution and also on account of the serious damage they do to the mango crop. In the course of our studies on these important orchard pests we have within the past three years come across three natural enemies of the adult hopper and one of the nymph; These are (1) a Pipunculid fly; (2) a Stylopid—both internal parasites; (3) an Epipyropid moth—an external parasite of the adults: and (4) a Dryinid wasp—an external parasite of the nymphs.