A new species of genus Oobius (Hymenoptera: Encyrtidae) parasitizing eggs of Emerald Ash Borer (EAB) from the Russian Far East

A new egg parasitoid of the emerald ash borer (EAB) Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), Oobius primorskyensis Yao et Duan, n.sp., was described from the Russian Far East. Both morphological characters and a random sample of 1000 contigs from the assembled genomes reveal that this species is different from the previously described emerald ash borer egg parasitoid O. agrili Zhang et Huang from China. Diagnosis of the new species with comparisons to related species, particularly O.agrili was carried out. The new species is another major natural enemy of EAB in its native range and may be considered for biological control introduction against EAB in North America. Its biology and risk spreading strategy is discussed in contast to O. agrili.