Trioserica macrophthalmaTrioserica macrophthalma is a species of beetle of the family Scarabaeidae. It is found in Taiwan.DescriptionAdults reach a length of about 7 mm. They are dull and brown, but often blackish-brown above. The head is weakly punctate and the antennae are yellowish-brown. The pronotum is densely and finely punctate. The elytra are punctate, with narrow ribs without puctures.