Microserica imitatrix is a species of beetle of the family Scarabaeidae. It is found in Malaysia (Sarawak).
Adults reach a length of about 6 mm. The head is green and the frons is dull and sparsely punctured, with scattered setae beside the eyes. The antennae are reddish-brown. The pronotum is olive-green and shows, albeit very faintly, a linear median longitudinal groove. The elytra are similarly coloured and sculpted as in related species Microserica lineolata and Microserica nigrolineata.