pine processionary caterpillars

allergy asphalt black butterfly caterpillar centipede centopiedi colony crawling crawly creepy dangerous hairs hairy harmful infection infestation infested insect insects irritant irritating larva lava line moth nature notifiable orange parasite pest pine pityocampa plague poison poisonous procession processionaries processionary pupa pupate road slither spring springtime thaumetopoea thaumetopoeidae wild wildlife