Thalera fimbrialis (Scopoli, 1763)

Host plants:
The caterpillar is polyphagous and is feeding mostly on various herbs. In rocky, steppe-like slopes it is often found at Artemisia campestris (e.g. Susa Valley in Piedmont).

Habitat:
Thalera fimbrialis inhabits nutrient-poor grasslands, heaths and rocky slopes.

Life cycle:
The caterpillar overwinters and is mature in May or June. The moths will fly from mid-June to August in a single generation.

Endangerment: endangered

Endangerment factors:
Thalera fimbrialis is in decline since grasslands are still trivialized by eutrophication, tourism and bush encroachment. Only in areas where there is still a comparatively dense network of grasslands, Thalera fimbrialis is still unchallenged, such as in the Southwestern Alps from about the Valais on.

Remarks:
Thalera fimbrialis is distributed across most of Europe and temperate Asia to about Korea.