Serica caiyiyiae is a species of beetle of the family Scarabaeidae.BioLib It is found in China (Guizhou).
Description Adults reach a length of about 8.2–8.6 mm. They have a dark brown, ovoid body. The anterior two thirds of the labroclypeus and legs are reddish brown, while the antennae are yellowish brown.
Etymology The species is dedicated to Ms. Yi-Yi Cai, the mother of Mr. Bao-Xiang Zhan.
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