Gastroserica guangdongensis is a species of beetle of the family Scarabaeidae. It is found in China (Fujian, Guangdong, Guangxi, Hunan).
Adults reach a length of about 8âÂÂ9.1 mm. They have an iridescent, chestnut brown, egg-shaped, oval body. They are nearly glabrous, except for some setae on the margins of the pronotum and the elytra.