Tetraserica quangtri is a species of beetle of the family Scarabaeidae. It is found in Vietnam.
Adults reach a length of about 9âÂÂ10.6 mm. They have an oval body. The dorsal surface is dark reddish 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 Quảng TrỠprovince.