Dear Wira

Pestnet has been in contact with beetle experts and it is considered to be a melolonthine scarab (=chafer) but as there are many genera it will need to be examined to determine which one. We are told that there is a modern key to the Australian genera so it might fit in there, but we have little info on the literature of your country.

We are hopeful that is some help.

grahame

In India we have also reported this pest. Infact 2 species have been reported world wide. Adoretus spp and Apogonia spp. 

Adoretus spp is more common in India feeding on leaf laminate making irregular holes. It’s more prevalent in both nurseries and juvenile plantations that are neglected.