Batkoa Major Infecting the Invasive Planthopper Lycorma Delicatula
27 Pages Posted: 9 Jun 2022
Batkoa major was documented causing co-epizootics with Beauveria bassiana in populations of invasive spotted lanternflies, Lycorma delicatula , in 2018 in northeastern North America. Although first described from North America in 1888, Batkoa major had not been studied since that time. The entomophthoralean fungus found in 2018 produces conidia and rhizoids similar in appearance to the original description. We conducted laboratory bioassays to investigate infection of different stages and sexes of these planthoppers, inoculating via showered conidia. All nymphs, and male and female adults were susceptible to infection. Adult males died more quickly than adult females or fourth instars. Batkoa major grew out of cadavers of adult males more frequently than adult females or fourth instar nymphs. Rhizoids that provide attachment of cadavers to substrates were produced from adult cadavers more frequently than conidia.
Keywords: Spotted lanternfly, Entomophthorales, Entomopathogenic Fungi, rhizoids, invasive insect, planthopper
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