Tetraserica sonla is a species of beetle of the family Scarabaeidae. It is found in Vietnam.
Adults reach a length of about 9.8âÂÂ11.3 mm. The dorsal surface is dark brown and glabrous, the pronotum with a weak greenish shine. The ventral surface and the legs are reddish brown and the antennae are yellow.
The species name refers to its occurrence in Son La province.