Benjamin Barthelemy / Brown argus (Aricia agestis) butterfly, Vallee de la Seille (Seille Valley), Lorraine, France, August.

Bernard Castelein / Small copper (Lycaena phlaeas) butterfly covered in dew droplets, resting on flowerhead. Klein Schietveld, Brasschaat, Belgium. August.

Alan Williams / Small copper (Lycaena phlaeas) butterfly nectaring on Ragwort (Jacobaea vulgaris). Dee Estuary, near Hoylake, Wirral, England, UK. July.

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

Ross Hoddinott / Common blue butterflies (Polyommatus icarus) resting on grasses, Vealand Farm, Devon, UK. June

Jussi Murtosaari / Large copper butterfly (Lycaena dispar), female showing under wing, Finland, July.

Alex Hyde / Small copper butterfly (Lycaena phlaeas) in meadow. Peak District National Park, Derbyshire, UK. May.

MYN / Dirk Funhoff / Silver studded Blue (Plebejus argus), Lorsch, Hessen, Germany. Meetyourneighbours.net project.

Rod Williams / Male Holly blue butterfly (Celastrina argiolus) on Creeping thistle flower, Brockley Cemetery, Lewisham, London, England, July.

Brent Stephenson / Male Common copper (Lycaena salustius) resting with wings open, showing the upperside patterning, Cape Kidnappers, Hawkes Bay, New Zealand, November.

Brent Stephenson / Male common copper (Lycaena salustius) resting with wings closed, showing the underside patterning, Cape Kidnappers, Hawkes Bay, New Zealand, November.

Brent Stephenson / A male common copper (Lycaena salustius) resting with wings partially open, Cape Kidnappers, Hawkes Bay, New Zealand, November.