BOLORIA DIA (10)
|BOLORIA DIA - for Luciano |
(Dear Luciano, I know you're a big butterfly specialist, if I'm wrong about this specie, please correct me...
In the few days of sunshine I was lucky to meet this specie and I shot some photos...)
In the workshop I post again the first image with open wings.
Boloria dia, the Weaver's fritillary or violet fritillary, is a butterfly in the family Nymphalidae. The name Weaver's fritillary is in honor of Richard Weaver, an English insect dealer who captured this species in the 19th century at Sutton Park, Tamworth. However, B. dia is uncommon in England and the few specimens known from there are thought to be from possibly accidental introductions.
The adult is a small fritillary with typically chequered orange-brown upperside and a submarginal row of triangles and dots. The forewing is 16–17 mm long. The underside of the hindwing has a distinctive purplish band.
B. dia differs from the pearl-bordered fritillary in having a sharp angle to its hindwing (readily seen from underside when perched with wings closed). The similar Titania's fritillary has a less sharply-angled hindwing and only occurs at high altitude.
In Europe the larvae feed on Viola species (Viola odorata, Viola hirta, Viola canina, Viola reichenbachiana, Viola tricolor), and outside Europe on Prunella vulgaris and Rubus idaeus.
B. dia is found in Europe, over the Caucasus up to Mongolia. It is widespread and common across southern France. In Europe it occurs from northern Spain, Italy and Greece to Poland, the Balkans and Turkey. It is not found in Britain.