English: Eiken processie rups; Oak processionary; Procession moth; Thaumetopoea processionea.
Zoology: night insects; cannot tolerate the sun, but having their nest and laying eggs at the sun side of twigs; their nest is full of their hairs with barbs, that can give rise to long lasting, intense burning pains in humans and severe inflammation in eyes; they go into the tree at night in a convoy.