Those white weevils are a menace to my macadamia nut tree and lychee nut tree. I spoke to an ag agent with the state of Florida about what to do and bad news is that their larvae stage is more damaging than the white, leaf chomping, adult. The larvae eat the roots then they climb up the stems and trunks of plants to munch the leaves as adults. He says there is nothing that will wipe them out but that grub worm poisons that contain the chemical dynex at a heavy dose will slow the down and help control them. Sevin dust is useful to help control them also on small plants. I've seen some damage on my avocado plant but not like the mac and lychee nut trees. Hope this helps.
RobertB
