Trioserica chuyangsinTrioserica chuyangsin is a species of beetle of the family Scarabaeidae. It is found in Vietnam.DescriptionAdults reach a length of about 5.8 mm. They have a light reddish brown, oblong body. The frons and pronotum are darker brown and the elytra have indistinct, small dark spots. The antennae are yellow. The dorsal surface is dull and the surface is almost glabrous.EtymologyThe species is named after its type locality, Chu Yang Sin national park.