Hans Christoph Kappel / Brown Hairstreak Butterfly (Thecla betulae) Germany

Andy Sands / Brown Hairstreak {Thecla betulae} male basking with wings open, captive, UK.

Andy Sands / Brown Hairstreak {Thecla betulae} female basking with wings open, Captive, UK.

Andy Sands / Brown Hairstreak {Thecla betulae} sitting on Backthorn leaf with wings closed, Captive, UK.

Paul Hobson / Brown hairstreak (Thecla betulae) resting on Hawthorn (Crataegus monogyna). Lincolnshire, England, UK. July.

MYN / Dirk Funhoff / Brown hairstreak butterfly (Thecla betulae) pupa, Lorsch, Hessen, Germany. May. Meetyourneighbours.net project

Jussi Murtosaari / Brown hairstreak butterfly (Thecla betulae) female resting, Raasepori, Uusimaa, Etela-Suomi / South Finland, Finland. August

Jussi Murtosaari / Brown Hairstreak butterfly (Thecla betulae) male feeding on Plume thistle flower, southwest Finland, August.

Jussi Murtosaari / Brown Hairstreak butterfly (Thecla betulae) female, Aland Islands, Finland, August.

David Kjaer / Brown Hairstreak (Thecla betulae) female butterfly feeding on flower, Dorset, UK, August.

David Kjaer / Brown Hairstreak (Thecla betulae) male butterfly and Hoverfly feeding on blackberry blossom, Dorset, UK, August.

David Kjaer / Brown Hairstreak (Thecla betulae) male feeding on flower, Dorset, UK, August.