none Diaeretiella rapae , a parasitoid of Lipaphis erysimi in north western districts of Uttar Pradesh, prefers oviposition in abdomen of the host. The eggs deposited in head, legs, thorax, cornicles and cauda, failed to develop further. In abdomen too, points of oviposition have been observed more in mid dorsal and mid lateral parts. This is due to the large and convex shape of the abdomen which covers near about 3/4th part of the host body. Reproduction; Reproductive behaviour; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Host parasite relationships Diaeretiella rapae (Braconidae); Oviposition; Site preference on hemipteran host; Hemipteran hosts; Lipaphis erysimi; Oviposition location preference in host; Distribution within host; Oviposition site preference in Lipaphis erysimi (Hemiptera) Lipaphis erysimi (Aphidoidea); Hymenopteran parasites; Diaeretiella rapae; Parasite oviposition site preference; Distribution within host; Oviposition site preference of Diaeretiella rapae (Hymenoptera)