Stethorus chengi is a species of beetle of the family Coccinellidae. It is found in Taiwan, Japan (Ryukyu Islands) and China (Zhejiang, Anhui, Jiangxi, Hubei, Hunan, Sichuan, Guizhou, Shaanxi).
Description Adults reach a length of about . The head is black, with a yellow clypeus in males, while it is yellowish brown in females. The pronotum, scutellum and elytra are entirely black.
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