Trioserica tongbiguanTrioserica tongbiguan is a species of beetle of the family Scarabaeidae. It is found in China.DescriptionAdults reach a length of about 5.4–6.1 mm. They have a yellowish brown, oblong body, with small dark spots on the elytra and two large, indistinct spots on the pronotum. The antennae and ventral surface are yellow. The dorsal surface is dull and the surface is almost glabrous.EtymologyThe species is named after its type locality, Tongbiguan village.