Tessin, Switzerland, August 2013

Grisons, Switzerland, July 2019

Field notes and information

An extremely local species found only in southeast Switzerland and a small part of north Italy and west Austria.

Identification & Similar species: Very distinctive yellow band on the underside hindwing. This is visible in flight to the keen eye from quite a distance - which can save a tough walk up very steep slopes.

Distribution & Flight: July. Flight time appears to be variable.

Habitat & Behaviour: It flies quite high (>2000m) and prefers warmer south facing grassy slopes.

Variation: The form from the northern part of its range, thiemei, has a slightly narrower yellow band.

Tessin, Switzerland, August 2013

Ticino, Switzerland, July 2020

Grisons, Switzerland, July 2019

Grisons, Switzerland, July 2019

Tessin, Switzerland, August 2013

Grisons, Switzerland, July 2019

Grisons, Switzerland, July 2019

Grisons, Switzerland, July 2019