Mealybugs belong to Pseudococcidae, a family of unarmored scale insects, found in moist, warm climates. Mealybug females feed on plant sap, normally in roots or other crevices. They attach themselves to the plant producing a powdery wax that is used for protection, hence the name mealybug. The males, are short-lived as they are there only to fertilize the females.
One mealybug will not hurt your plant, but they multiply quickly and if a plant is badly affected, the mealybugs may overwhelm the plant. Mealybugs can kill your palm by sucking all the juices out of the plant.
One of the things you can do is to rub your plant with a mix of soapy water and alcohol. Make a solution of 1 part alcohol to 1 part water with some dish soap mixed in, wash down the entire palm. This should slow them down. To get rid of mealybugs completely I recommend spraying your palm with Safer Brand Insect Killing Soap.This spray always worked for me on all kind of scale insects. It’s organic formula will help you get rid of mealybugs but won’t harm beneficial insects. Hope this helps. ~ Susan