Update information. Peristenus spretus (Hymenoptera: Braconidae) is one of the important nymph endoparasitoids for biological control of green mired bug, Apolygus lucorum Meyer-Dür (Heteroptera: Miridae). However, knowledge on the genetic regulation of P. spretus reproduction is very limited. Here, the proteomic approach was used to characterize the composition of ovarian proteins in P. spretus. Mass spectrum data searched against the non-redundant NCBI protein and UniProt protein database led to identification of 1382 proteins in the P. spretus ovary