Aspen-specialist
Guides
Chrysomela crotchi
aspen leaf beetle
Chrysomela crotchi, the aspen leaf beetle, is a univoltine leaf beetle species in the family Chrysomelidae that feeds exclusively on trembling aspen (Populus tremuloides). Adults are notable for their exceptional longevity, capable of overwintering two successive years. The species has been studied extensively in northwestern Ontario and at the Aspen FACE site in northern Wisconsin, where research has examined how host plant genotype and atmospheric conditions affect beetle performance. Populations are subject to regulation primarily through predation on immature stages and overwintering mortality.