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Cottonwood Leaf Beetle

Cottonwood Leaf Beetle: Biological Control

Forestry Images: USDA Forest Service
Hippodamia convergens larvae attacking cottonwood leaf beetle eggs
University of Georgia
Coleomegilla maculata adult attacking cottonwood leaf beetle eggs
Forestry Images: State University of New York
Stiretus anchorago (stink bug) attacking adult cottonwood leaf beetle

BIOLOGICAL CONTROL:
A number of natural enemies attack the cottonwood leaf beetle. These include lady beetles Coleomegilla maculata (pink lady beetle, Hippodamia convergens (convergent lady beetle), and Harmonia axyridis (Asian lady beetle), stink bugs, assassin bugs, ants, spiders, tachinid flies and parasitic wasps. Biorational insecticides spinosad and that conserve beneficial insects can be used to manage cottonwood leaf beetle. Bacillus thuringiensis var. tenebrionis (=san diego) may be used to control early instar larvae, spinosad can control larvae, and Beauveria bassiana can be used to kill overwintering adults.
DISTRIBUTION DESCRIPTION HOST AND DAMAGE LIFE CYCLE
MONITORING CHEMICAL CONTROL BIOLOGICAL CONTROL RESOURCES
RESEARCH:
Management of cottonwood leaf beetle with a transplant soak and biorationals
Comparison of standard and novel imidacloprid treatments for cottonwood leaf beetle


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Last modified on March 06, 2013