Asobara tabida and Asobara citri are two braconid endoparasitoids of Drosophila melanogaster larvae. We studied and compared the strategies evolved by these two species to avoid the immune reaction of their host. A. tabida has no negative impact on host cellular defenses and its eggs avoid encapsulation by adhering to host tissues. At the opposite, we found that A. citri, whose eggs are devoid of adhesive properties, affects the host encapsulation abilities, hemolymph phenoloxidase activity and concentrations of circulating hemocytes. Some of these effects could directly rely on a severe disruption of the hematopoietic organ anterior lobes observed in parasitized larvae. This is the first report of the immune suppressive abilities of a parasitoid from the Asobara genus. Results are presented and discussed with respect to the strategies of virulence evolved by other parasitoids to counteract the D. melanogaster immune system. Biochemistry; Proteins; Circulatory system; Reproduction; Parasites diseases and disorders; Parasites; Insect parasites; Hosts; Insect hosts; Immunology and repair mechanisms Drosophila melanogaster (Drosophilidae); Enzymes; Haemolymph; Hymenopteran parasites; Asobara citri & Asobara tabida; Parasitoid strategies for avoiding host immune response, comparative study; Immune like reactions; Tissue reactions Asobara citri; Asobara tabida (Braconidae ); Egg; Dipteran hosts; Drosophila melanogaster; Parasitoid strategies for avoiding host immune response, comparative study none Asobara citri?