Maladera baii is a species of beetle of the family Scarabaeidae. It is found in China (Fujian).
Adults reach a length of about 9.4âÂÂ10.3 mm. They have a dark brown, oblong-oval body. The antennae are yellow. The labroclypeus is weakly shiny, but the remainder of the dorsal surface is dull and, except for a few long setae on the elytra, glabrous.
The species is dedicated to Dr. Ming Bai.