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Found in western North America associated with its host plant, Coyote Brush (
Baccharis pilularis). Note the similarity in ecological niche and distribution of Groundselbush Beetle in the eastern U.S. In fact, I correctly guessed this species genus and role the first time I encountered it based on my experience with Groundselbush Beetle (
Trirhabda bacharidis) in Maryland.
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