Nudaria mundana (Linnaeus, 1761)

Host plants:
The larvae consume lichens, algae and moss, mostly on stones and rocks.

Habitat:
Nudaria mundana usually occurs on shaded to partially shaded rocks in forests and calcareous grasslands. But it also lives in rough screes or block fields, e.g. in old quarries, and in stone walls. Some caterpillars are also found on old, mossy and lichen-rich, shady buildings in the forest area.

Life cycle:
The hibernating caterpillar is mature in June. Species detection is best achieved by search for caterpillars, which can also be carried out in in the winter. In block fields and cairns the caterpillars are usually found on the bottom side of larger blocks that lie on other stones, sometimes not before a layer deeper.

Endangerment: regionally endangered or decreasing

Endangerment factors:
Overall, Nudaria mundana is endangered rather low.

Remarks:
In Europe, the distribution ranges from Northern Spain and Ireland through Central Europe and the northern Mediterranean to the Black Sea (Turkey).