detail of the head of pine processionary thaumetopoea pityocampa

detail head pine processionary thaumetopoea pityocampa caterpillar nature closeup insect pest caterpillars animal larva moth tree danger background worm forest trap dangerous poisonous pheromone plague procession hairy natural hair europe invertebrate lepidoptera larvae spiky swarm environment wildlife black many butterfly animals bug infection immunity infestation furry nest young yellow cute health