Halyzia dejavu is a species of beetle of the family Coccinellidae. It is found in India (Arunachal Pradesh, Sikkim), Nepal, Bhutan and China.

Description Adults reach a length of about . The head, pronotum and elytra are bright creamy to lemon yellow, the pronotum with two reddish brown to ochreous brown spots. The scutellum is yellow with a pale brown border. Each elytron has four reddish brown to dull brown spots and the elytral suture has a dull brown to reddish brown stripe. The lateral sides of the pronotum and elytra are transparent.

Life history They have been recorded preying on aphids.

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