caterpillar of pine processionary larvae thaumetopoea pityocampa

allergy animal behavior butterflies butterfly caterpillar closeup cluster colours community control damage danger dangerous explosion fire forest furry growth hairy infected infection insect insects irritation larva larvae leaf macro metamorphosis moth movement nature needle oak parasite pest pine pityocampa plague poisonous procession processionary spark spring thaumetopoea toxic tree wild wildlife worm