Phylogenetic relationship of Diastrophini species based on COI and 28S sequences resolved using with MrBayes 3.2.6 (Ronquist et al. 2012). Two independent MCMC runs were run with the following parameters: 10 million gens, nst = 6, rates = gamma, sample frequency = 1/1,000, burn-in = 30%, and otherwise default. The length of the branches is drawn to scale of genetic distance and the number over branches is posterior probability. Abbreviations for generic names: Dr – Dryocosmus, Di – Diastrophus, Sy – Synophromorpha, Xe – Xestophanes, and Pe – Periclistus.