oak processionary caterpillars, thaumetopoea processionea, on infected pedunculate oak, quercus robur

animals burn caterpillar caterpillars combat danger dangerous day ermine fire forming ground hair hairs hairy health humans infected irritation itch light low moth needle nest nests oak organs pedunculate plague processionary processionea quercus ramblings respiratory robur sharp skin striped sunny sunrise thaumetopoea trunk warm