Serica stygia 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 9.5 mm. The colour is brown (dark bay to chestnut) with a fairly strong rainbow sheen or iridescence.
Life history Adults have been recorded feeding on Arctostaphylos glandulosa, Adenostoma fasciculatum and the flowers of Malosoma laurina.
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