Trioserica phetchabunTrioserica phetchabun is a species of beetle of the family Scarabaeidae. It is found in Thailand.DescriptionAdults reach a length of about 6.8–7.6 mm. They have a yellowish brown, oblong body, with numerous small dark spots. The antennae and ventral surface are yellow, the dorsal surface is dull and the surface is almost glabrous.EtymologyThe species name is derived from its occurrence in the Phetchabun province.