Palmetto Weevils typically attack wounded or stressed palm trees. However, they have been known to infest Canary Island Date and Bismarck palms to name a few.
The weevil uses its snout to prepare holes in the base of the frond in which eggs are Laid. After the egg hatches and molts into the pupal stage, which looks like a grub, it then starts to feed on the palm tissue from the inside. The destruction of the fronds, both young and old, leads to the irreversible decline and death of the palm.
Palm Weevils cannot be treated once they have infested the palm. In most cases of infestation the palm will die and need to be replaced. A preventative treatment is the only means of protection.