Gastroserica piceocoerulea is a species of beetle of the family Scarabaeidae. It is found in Laos, Thailand and China (Yunnan).
Adults reach a length of about 4.6âÂÂ6 mm. They have a dark brown to blackish, oval body, the pronotum with some greenish shine and the elytra blue-iridescent. The legs and antennal club are brown and the dorsal surface is shiny and nearly glabrous.
The name of the species is derived from Latin piceus (meaning black) and coeruleus (meaning blue) and refers to the dark, iridescent shiny body surface.