Cystatin gene tree obtained by maximum likelihood. Node supports are shown by bootstraps and by posterior probabilities from Bayesian inferences above and below each branch, respectively. Bootstrap scores or posterior probabilities lower than 50% are not represented. Sequences were obtained from bracoviruses of Cotesia congregata (CcBV), Cotesia flavipes (CfBV), Cotesia chilonis (CchBV), Cotesia melanoscela (CmBV), Cotesia vestalis (CvBV), Cotesia rubecula (CrBV), Cotesia sesamiae (CsBV), Cotesia karyai (CkBV)and Cotesia glomerata (CgBV). Cystatin sequences from CcBV genome are noted CcBVcyst1, CcBVcyst2 and CcBVcyst3.