Scolitantides orion (Pallas, 1771)

Host plants:
The larva feeds on Sedum species, in Central Europe usually Sedum maximum, but also on Sedum album.

Habitat:
Scolitantides orion inhabits rocky slopes, stony walls, bushy, rocky grasslands, stony woodland edges and embankments, secondarily also vineyard walls etc.
I observed imagines and oviposition for example in the Alps in a rocky Apollo habitat on Sedum album.

Life cycle:
Scolitantides orion appears in one or two generations per year and fly from April to June, and again in July/August. The eggs are laid on the leaves. The pupa hibernates.

Endangerment: threatened with extinction

Endangerment factors:
Scolitantides orion is everywhere strongly endangered by succession and reforestation, intensifying (modern viticulture), quarrying and tourism. It is still more widespread in the Southern Alps.

Remarks:
Scolitantides orion occurs extremely local in the Iberian Peninsula, the eastern Pyrenees, parts of Central and Southern Europe (misses in most of Italy) and Asia to Japan.