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The Great Lakes Entomologist

Asiatic garden beetle

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Preliminary Feeding Assessments For Asiatic Garden Beetle, Maladera Formosae (Coleoptera: Scarabaeidae), Grubs And Adults, Adrian J. Pekarcik, Matthew O. Lorentz, C. Scott Clem, Amy L. Raudenbush, David W. Held, Kelley J. Tilmon Feb 2023

Preliminary Feeding Assessments For Asiatic Garden Beetle, Maladera Formosae (Coleoptera: Scarabaeidae), Grubs And Adults, Adrian J. Pekarcik, Matthew O. Lorentz, C. Scott Clem, Amy L. Raudenbush, David W. Held, Kelley J. Tilmon

The Great Lakes Entomologist

The Asiatic garden beetle, Maladera formosae (Brenske) (syn. M. castanea [Arrow]), is an annual white grub species that was unintentionally introduced from east Asia to North America in 1921 in New Jersey, and has since spread to at least 25 states and two Canadian provinces. Grub populations in the Great Lakes region have recently emerged as significant early-season pests of field crops, particularly field corn, grown in sandy soils. Asiatic garden beetle has also recently become established in other regions including Alabama. Prior research on this species was conducted mainly in the 1930s in horticultural and turfgrass systems of New …


Quick Sex-Determination Of The Asiatic Garden Beetle, Maladera Castanea (Coleoptera: Scarabaeidae), Adrian J. Pekarcik, C. Scott Clem, Kyle J. Akred, Kelley J. Tilmon Nov 2022

Quick Sex-Determination Of The Asiatic Garden Beetle, Maladera Castanea (Coleoptera: Scarabaeidae), Adrian J. Pekarcik, C. Scott Clem, Kyle J. Akred, Kelley J. Tilmon

The Great Lakes Entomologist

The orientation of the posterior abdominal sternite and pygidium allows for quick sex-determination of Maladera castanea (Arrow) (Coleoptera: Scarabaeidae: Melolonthinae) adults with a dissecting microscope or hand lens. Maladera castanea (the Asiatic garden beetle) is an emerging pest of field crops and this information will help researchers to conduct studies more easily on its biology and ecology.