Two new species of egg parasitoids, Oobius saimaensis
Yao and Mottern new species and Oobius fleischeri
Yao and Duan new species (Hymenoptera: Encyrtidae), are described from eggs of Agrilus fleischeri Obenberger, 1925 (Coleoptera: Buprestidae). Agrilus fleischeri
is a phloemfeeding woodborer of poplar (Populus
Linnaeus; Salicaceae) in northeastern China. These two species can be distinguished morphologically as O. fleischeri
has five tarsomeres and O. saimaensis
has four tarsomeres. Although O. saimaensis
is morphologically similar to its sympatric congener O. agrili
Zhang and Hang, 2005, an important natural enemy of the invasive emerald ash borer, Agrilus planipennis
Fairmaire, 1888, molecular phylogenetics and morphological data indicate that they are distinct species. Phylogenetic relationships among the new species and other closely related species are also inferred by using DNA sequence data from several ribosomal and mitochondrial genes. In addition, we expand the known distribution of Oobius primorskyensis
Yao and Duan, 2016 to include South Korea.
Yao, Yan-Xia; Duan, Jian J.; Mottern, Jason L.; Wang, Xiao-Yi; Yang, Zhong-Qi; Bauer, Leah S.; Gates, Michael W. 2018. Two new species of Oobius (Hymenoptera: Encyrtidae) and their phylogenetic relationship with other congeners from northeastern Asia. The Canadian Entomologist. 150: 303-316. https://doi.org/10.4039/tce.2018.17.