Answer: I can't tell from your description whether the worms are attacking your palm or if they are secondary and just wandered over from another plant in the nursery. There is a product called Bt (bacillus thuringensis) that will control small caterpillars. It is sold under the names Dipel and Thuricide. Spray your plant with Bt and see if that takes care of them. If not, return the palm for a healthier specimen. Best wishes with your palm!
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