Andy Sands / Purple Hairstreak {Quercusia quercus} male on Oak leaf with wings partially open, Captive, UK

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.

Duncan Mcewan / Green Hairstreak Butterfly, summer, Scotland.

David Woodfall / Green Hairstreak (Callophrys rubi) butterfly on thistle. Radnorshire Wildlife Trust Nature Reserve, Wales, UK, June.

David Woodfall / Green Hairstreak (Callophrys rubi) butterfly on thistle. Radnorshire Wildlife Trust Nature Reserve, Wales, UK, June.

Nick Upton / Ilex hairstreak (Satyrium ilicis) feeding on Cretan oregano flowers (Origanum onites) with wings closed, Lesbos (Lesvos), Greece, June.

Simon Colmer / White-letter Hairstreak butterfly (Satyrium w-album) egg on Elm (Ulmus procera) twig, Sussex, UK, March

Kim Taylor / Green Hairstreak Butterfly (Callophrys rubi) resting on leaves. Surrey, UK, June.

Kim Taylor / Green Hairstreak Butterfly (Callophrys rubi) resting on leaves. Surrey, UK, June.

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.

Andy Sands / Purple Hairstreak (Neozephyrus quercus female with wings open, Captive, England, UK, July

Andy Sands / Purple Hairstreak (Neozephyrus quercus male with wings open, Captive, England, UK, July

Russell Cooper / Green Hairstreak Butterfly (Callophrys rubi) at rest on Black Medick (Medicago lupulina) Surrey, England, UK

Russell Cooper / Green Hairstreak Butterfly (Callophrys rubi) at rest on Black Medick (Medicago lupulina) Surrey, England, UK

David Kjaer / Green Hairstreak butterfly (Callophrys rubi) at rest on leaves, with wings closed, Wiltshire, England, UK.

David Kjaer / Green Hairstreak butterfly (Callophrys rubi) at rest on Hawthorn flower buds with wings closed, Wiltshire, England, UK.

David Kjaer / Green Hairstreak (Callophrys rubi) at rest on leaf, with wings closed, Wiltshire, England, UK.

Robert Thompson / White-letter hairstreak butterfly (Satyrium w-album) Surrey, UK

Robert Thompson / Green hairstreak butterfly (Callophrys rubi) resting on green bramble leaf, Montiaghs Moss NNR, County Antrim, Northern Ireland, UK, April

Robert Thompson / Brown hairstreak butterfly (Thecla betulae) feeding on bramble flower, Burren, County Clare, Republic of Ireland

Robert Thompson / Black hairstreak butterfly (Satyrium pruni) resting with wings closed on vegetation, Northern Ireland, UK

Edwin Giesbers / Two Ilex hairstreak butterflies (Satyrium ilicis) feeding on Cistus flower, Lesbos, Greece

Paul Hobson / Green hairstreak butterfly (Callophrys rubi) perching on Bilberry, Derbyshire, UK

Paul Hobson / Green hairstreak butterfly (Callophrys rubi) perched on Bilberry, Derbyshire, UK

Silvia Reiche / Ilex Hairstreak (Satyrium ilicis) butterfly pair mating, Netherlands

Thomas Marent / Green Hairstreak (Callophrys rubi) butterfly, Switzerland

Thomas Marent / Green Hairstreak (Callophrys rubi) pair, Switzerland

Gary K. Smith / Green hairstreak butterfly {callophrys rubi} at rest on Gorse Bush, UK, may

Ross Hoddinott / Green hairstreak butterfly {Callophrys rubi} on Bird's foot trefoil in Marshland, Cornwall, UK

Russell Cooper / Green hairstreak butterfly {Callophrys rubi}, resting on leaf, UK

Bernard Castelein / Green hairstreak butterfly {Callophrys rubi} on sand. Kalmthoutse Heide, Belgium

Hans Christoph Kappel / Brown hairstreak butterfly {Thecla betulae} on leaf, Germany

Paul Hobson / White letter hairstreak butterfly {Satyrium w-album} on Ragwort, Yorkshire, UK

Duncan Mcewan / Purple Hairstreak Butterfly (Neozephyrus quercus on leaf, Scotland

Andy Sands / Black Hairstreak Butterfly (Satyrium pruni) at rest with wings closed on Blackthorn. UK. Captive.

Andy Sands / Green Hairstreak Butterfly (Callophrys rubi) at rest on Broom. UK. Captive.

Andy Sands / Green Hairstreak Butterfly (Callophrys rubi) at rest on Broom. UK. Captive.

Andy Sands / Black Hairstreak Butterfly (Satyrium pruni) at rest with wings closed on Blackthorn. UK. Captive.

Andy Sands / Black Hairstreak Butterfly (Satyrium pruni) at rest with wings closed on Blackthorn. UK. Captive.

Andy Sands / Green Hairstreak Butterfly (Callophrys rubi) at rest on Broom. UK. Captive.

PREMAPHOTOS / Green hairstreak butterfly (Callophrys rubi) female feeding from a Horseshoe vetch flower, UK

Robin Chittenden / Purple hairstreak {Quercusia quercus} UK

Robin Chittenden / Black hairstreak butterfly {Satyrium pruni} UK

Ross Hoddinott / Green hairstreak butterfly {Callophrys rubi} Fingle bridge, Devon.

Ross Hoddinott / Green hairstreak butterfly {Callophrys rubi} resting on leaf, Fingle bridge, Devon, UK.

Philippe Clement / Black hairstreak {Satyrium pruni} on flower, La Brenne, France.

Duncan Mcewan / Purple Hairstreak Butterfly (Neozephyrus quercus Scotland, UK

Duncan Mcewan / Purple Hairstreak Butterfly (Neozephyrus quercus Scotland, UK

Andy Sands / Purple Hairstreak {Quercusia quercus} On Oak leaf wings closed, Captive, UK.

George McCarthy / White letter hairstreak butterfly {Satyrium w-album} Surrey, UK

Andy Sands / White letter hairstreak butterfly {Satyrium w-album} resting. Captive. UK.

Andy Sands / Purple hairstreak butterfly {Quercusia quercus} resting. UK.

Kim Taylor / Brown hairstreak butterfly eggs on twig {Thecla betulae} UK.

Kim Taylor / Green hairstreak butterfly {Callophrys rubi} on Gorse flower, UK.

Kim Taylor / Brown hairstreak butterfly caterpillars on Blackthorn leaves {Thecla betulae} UK.

Kim Taylor / Green hairstreak butterfly newly emerged beside pupal case {Callophrys rubi} UK.

Kim Taylor / Green hairstreak butterfly {Callophrys rubi} on Gorse flowers, UK.

Kim Taylor / Brown hairstreak butterfly pupa amongst leaf litter {Thecla betulae} UK.

Kim Taylor / Brown hairstreak butterfly {Thecla betulae} female on oak leaves UK.

Kim Taylor / Brown hairstreak butterfly {Thecla betulae} female on oak leaves UK.

Steve Knell / Green hairstreak butterflies mating {Callophrys rubi} UK.

Paul Hobson / Black hairstreak butterfly, male {Satyrium pruni} England

Paul Hobson / Black hairstreak butterfly, male {Satyrium pruni} England

Paul Hobson / Brown hairstreak butterfly {Thecla betulae} on blackthorn, England

Paul Hobson / Brown hairstreak butterfly {Thecla betulae} on oak leaf, England

Paul Hobson / Brown hairstreak butterfly {Thecla betulae} on oak leaf, England

Paul Hobson / Brown hairstreak butterfly {Thecla betulae} on oak leaf, England

Paul Hobson / Brown hairstreak butterfly {Thecla betulae} on oak leaf, England

Paul Hobson / Black hairstreak butterfly, female {Satyrium pruni} England

Paul Hobson / Black hairstreak butterfly, female {Satyrium pruni} England

Kim Taylor / Eggs of Brown Hairstreak Butterfly (Thecla betulae) UK

Hans Christoph Kappel / Brown Hairstreak. C (Thecla betulae)

Silvia Reiche / Green Hairstreak (Callophrys rubi) side view, on flower

Duncan Mcewan / Green Hairstreak Butterfly, summer, Scotland, UK

George McCarthy / Green hairstreak butterfly {Callophrys rubi} Surrey, UK

Ross Hoddinott / Green hairstreak butterfly {Callophrys rubi} on bracken Devon, UK

Mark Moffett / Hairstreak butterfly drinking bird dropping, its larva lives with Ants, Brunei, Borneo

Mark Moffett / Hairstreak butterfly, Gunung Mulu National Park, Sarawak, Borneo

Mark Moffett / Imperial Hairstreak (Jalmenus evagoras) caterpillar tended by ant (Iridomyrmex anceps)

Mark Moffett / Ant (Crematogaster sp) group tending Hairstreak Caterpillar, are attracted to liquid excreted from abdomen of Caterpillar, French Guiana

Mark Moffett / Ant (Crematogaster sp) group tending Hairstreak Caterpillar, are attracted to liquid excreted from abdomen of Caterpillar, French Guiana

Robert Thompson / Purple hairstreak butterfly (Neozephyrus quercus resting on leaf with wings open, Crom Estate, County Fermanagh, Northern Ireland, UK, August

Robert Thompson / Purple hairstreak butterfly (Neozephyrus quercus resting on leaf with wings closed, Crom Estate, County Fermanagh, Northern Ireland, UK, August

Robin Chittenden / Sloe hairstrealk (Satyrium acaciae) on flowers, Tokaj Hill, Hungary, June

Kim Taylor / Green hairstreak butterfly (Callophrys rubi) on Blackthorn flowers, Surrey, England

Barry Mansell / Red banded hairstreak butterfly {Calycopis cecrops} feeding from flower, Florida, USA

Paul Hobson / Green hairstreak butterfly {Callophrys rubi} Derbyshire UK Peak district NP

George McCarthy / Brown hairstreak butterfly female ovipositing {Thecla betulae} Hampshire UK