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Video Q&A ViewAttendees 3

Plant-Insect Ecosystems

10-Minute Paper

P-IE: Biocontrol On-Demand Presentations

The puzzling lifecycle of Anastatus orientalis, a parasitoid of the spotted lanternfly

On-Demand
On-Demand

    Presenting Author(s)

  • Juli R. Gould

    Entomologist
    USDA-APHIS
    Buzzards Bay, Massachusetts

    • Co-Author(s)

  • Hannah J. Broadley

    USDA-APHIS
    Buzzards Bay, Massachusetts

  • WX

    Wang Xiao-yi

    Chinese Academy of Forestry
    Beijing, Beijing, China (People's Republic)

  • LC

    Liang-ming Cao

    Chinese Academy of Forestry
    Beijing, Beijing, China (People's Republic)

Anastatus orientalis is a well known parasitoid that attacks eggs of spotted lanternfly, Lycorma delicatula, in China.  This species was discovered after spotted lanternfly invaded Korea and was used as a biocontrol agent in that country.  The working hyposthesis was that A. orientalis attacked freshly laid lanternfly eggs in the fall, overwintered inside spotted lanternfly eggs, then emerged in the spring and parasitized yet unemerged spotted lanternfly eggs.  Growth chamber studies and field observations showed that in Beijing and Yantai China there were lifecycles that did not match the hyposthesized pattern. We observed emergence of a summer generation (when lanternfly eggs are not available) and some parasitoids that emerged in the fall a full year following oviposition.  Subsequent molecular analysis showed that there are several haplotypes of A. orientalis occurring in China.  We are currently conducting further collections and lifecycle studies to elucidate the complexities of A. orientalis ecology in China and Korea, where it has established.