Pachyserica bistriata is a species of beetle of the family Scarabaeidae. It is found in Vietnam.
Adults reach a length of about 8.9âÂÂ9.5 mm. They have a dark reddish-brown, elongate, egg-shaped oval body, with a metallic greenish sheen. The antennae are yellowish-brown. The surface is entirely dull, except for the shiny labroclypeus. The upper surface has numerous white scale-like hairs and the pronotum and elytra have some erect, long, thin setae.
The species name is derived from Latin bi (meaning two) and striata (meaning striped).