nest of toxic invasive oak processionary caterpillars

2018 animal asthma beach bug bush caterpillar caterpillars city coast danger dangerous dune dutch europe fauna garden hague health holland infection infest insect invade invasive kijkduin landscape larvae lepidoptera may moth nature nest netherlands oak park people photo plague poisonous predator problem processionary processionea rash skin stock thaumetopoea touch toxic tree vomit web