Thalera fimbrialis (Scopoli, 1763)


Thalera fimbrialis: Adult (e.l. Haute-Provence 2009) [S] Thalera fimbrialis: Adult few seconds after emergence [S] Thalera fimbrialis: Adult expanding its wings [S] Thalera fimbrialis: Adult (e.l. Valle di Susa, Italy) [S] Thalera fimbrialis: Larva (Susa) [M] Thalera fimbrialis: Larva (Haute-Provence, La Palud sur Verdon, June 2009) [M] Thalera fimbrialis: Larva [M] Thalera fimbrialis: Larval head [M] Thalera fimbrialis: Head lateral [M] Thalera fimbrialis: Larva caudal [M] Thalera fimbrialis: Pupa [S] Thalera fimbrialis: Pupa dorsal [S] Thalera fimbrialis: Typical larval habitat on dry slopes in Valais (April 2008) [N]

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.