Serica adversa is a species of beetle of the family Scarabaeidae.BioLib It is found in the United States (California).
Description Adults reach a length of about 8 mm. They are dark brown, bare and shining with conspicuous, fine, dense punctuation, with a little fine hair on the elytral margin, the basal portion of the legs and the under surface.
Life history Recorded host plants for the adults are Comarostaphylis diversifolia, Adenostoma fasciculatum and Helianthemum scoparium.
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