pine tree processionary seen in a tree in the island of mallorca

africa animals asia behaviour biology butterfly caterpillar caterpillars cause cedars central columns countries danger destructive ecology europe family forest hairs hairy harmful high humans infection infestation insects invertebrate irritating island its larva larvae mallorcan mammals most moth nature nest nests nit north nosetail notable one other overwinter parasite pest pests pine pines pityocampa plague poisonous proceed processionary protected reactions seen severely southern species tent thaumetopoea thaumetopoeidae their tree trees urticating which wildlife woods worms