Trioserica samoengTrioserica samoeng is a species of beetle of the family Scarabaeidae. It is found in Thailand.DescriptionAdults reach a length of about 6.1 mm. They have a short oval body. The dorsal surface is dark brown and the ventral surface is red brown. The labroclypeus and numerous spots are light brown, while the antennae are yellow. The dorsal surface is dull and the surface is almost glabrous.EtymologyThe species is named after its occurrence in Samoeng district.