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    Author(s): Yan-Xia Yao; Jian J. Duan; Jason L. Mottern; Xiao-Yi Wang; Zhong-Qi Yang; Leah S. Bauer; Michael W. Gates
    Date: 2018
    Source: The Canadian Entomologist
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (3.0 MB)

    Description

    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.

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    Citation

    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.

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