Gastroserica cognataGastroserica cognata is a species of beetle of the family Scarabaeidae. It is found in Vietnam.DescriptionAdults reach a length of about 5.9 mm. They have an oval body. The body is yellow and there are multiple symmetric, small dots on the pronotum and elytra. The abdomen is dark brown, while the frons is slightly darker posteriorly. The dorsal surface is dull and nearly glabrous.