Sylvain Cordier / Monarch butterfly (Danaus plexippus) wintering in Oyamel pine forests (Abies religiosa) Monarch Butterfly Biosphere Reserve / Reserva de Biosfera de la Mariposa Monarca UNESCO World Heritage Site, An...

Guy Edwardes / Marbled white (Melanagria galathea), two butterflies on Pyramidal orchid (Anacamptis pyramidalis). Badbury Rings, Wimborne Minster, Dorset, England, UK. June.

Lorraine Bennery / Knapweed fritillary butterflies (Melitaea phoebe) on Green winged orchid (Anacamptis morio), Grands Causses Regional Natural Park, France, May.

Floris van Breugel / Monarch butterflies (Danaus plexippus) over winter on Eucalyptus and Monterey Cypress trees near Pismo Beach, San Luis, California, USA December.. When temperatures warm up enough, they will embark on...

Alex Hyde / Painted lady butterfly (Vanessa cardui) on flower, Peak District National Park, Derbyshire, UK. September.

Jussi Murtosaari / Peacock butterfly (Inachis io) newly emerged on asters, Jyvaskyla, Finland, August.

Jim Brandenburg / Monarch (Danaus plexippus) butterfly group resting on Thickspike Gayfeather (Liatris pycnostachya) flowers, North America

Lorraine Bennery / Lesser marbled fritillary butterfly (Brenthis ino), Haute-Savoie, France, June.

Laurent Geslin / Tortoisehell butterfly (Aglais urticae) with Ponts Couverts in distance, Strasbourg, France. June 2014.

Nick Turner / Marsh fritillary butterfly (Euphydrayas aurinia) feeding on Wild garlic / Ramsons (Allium ursinum) at Strawberry Banks, Gloucestershire Wildlife Trust (GWT), Nature Reserve, Gloucestershire, UK. May.

Wim van den Heever / Julia heleconia (Dryas iulia) butterfly on head of Yacare caiman (Caiman yacare). Butterflies often land on caiman's head to drink the salt from its eyes.Pantanal, Brazil.

Wim van den Heever / Julia heleconia (Dryas iulia) butterfly on head of Yacare caiman (Caiman yacare). Butterflies often land on caiman's head to drink the salt from its eyes. Pantanal, Brazil.

Matthew Maran / Meadow brown (Maniola jurtina) resting on grass in Cohen's Field, Hampstead Heath, London, England, UK, June.

Jussi Murtosaari / Silver washed fritillary butterfly (Argynnis paphia) female in flight with thistles, Uusimaa, Finland, August.

Ernie Janes / Red admiral butterfly (Vanessa atalanta) on sunflower in garden. Norfolk, England, UK. August.

Ernie Janes / Small Tortoiseshell Butterfly (Aglais urticae) on Sea Holly (Eryngium maritimum) Norfolk, England, UK, August

Ernie Janes / Small tortoiseshell butterfly (Aglais urticae) on Hemp agrimony (Eupatorium cannabinum) England, UK, August.

Ernie Janes / Small Tortoishell Butterfly (Aglais urticae) on cone flowers (Echinacea purpurea) England, UK, August.

Ernie Janes / Small tortoiseshell butterflies (Aglais urticae) feeding on Hemp agrimony (Eupatorium cannabinum) England, UK, August.

Ernie Janes / Small tortoiseshell butterflies (Aglais urticae) feeding on Hemp agrimony (Eupatorium cannabinum) England, UK, August.

Ernie Janes / Small Tortoiseshell Butterfly (Aglais urticae) feeding on Common fleabane (Pulicaria dysenterica) England, UK, August.

Ernie Janes / Small tortoiseshell butterfly (Aglais urticae) and Peacock butterfly (Inachis io) feeding on Common fleabane (Pulicaria dysenterica) England, UK, August.

Ernie Janes / Painted Lady Butterfly (Vanessa cardui) on Cone flowers (Echinacea purpurea) in garden, England, UK, August.

Ernie Janes / Coneflower (Echinacea purpurea 'rubinstern') with feeding Peacock butterfly (Inachis io) in garden, England, UK, August

MYN / Emanuele Biggi / Spotted Fritillary butterfly (Melitaea didyma) mating pair on daisy, Italy, June. Meetyourneighbours.net project

MYN / ACREMAR / Two-tailed Pasha (Charaxes jasius) caterpillar, Sestri Levante, Liguria, Italy. Meetyourneighbours.net project

Jussi Murtosaari / Bog fritillary butterfly (Boloria eunomia) male, central Finland, June.

Jussi Murtosaari / Comma (Polygonia c-album) male on gravel, southwest Finland, July.

Jussi Murtosaari / Comma butterfly (Polygonia c-album) and hoverfly on dandelion, South Karelia, southern Finland, September.

Jussi Murtosaari / Camberwell beauty butterfly (Nymphalis antiopa) central Finland, August.

Jussi Murtosaari / False Heath Fritillary butterfly (Melitaea diamina) Pirkanmaa, Finland, June.

Jussi Murtosaari / False Heath Fritillary butterfly (Melitaea diamina) female on buttercup, Pirkanmaa, Finland, June.

Jussi Murtosaari / Glanville Fritillary butterfly (Melitaea cinxia) male, Aland Islands, Finland, May.

Jussi Murtosaari / Heath Fritillary butterfly (Melitaea athalia) male, South Karelia, southern Finland, June.

Jussi Murtosaari / Lesser Marbled Fritillary butterfly (Brenthis ino) flyingover meadow habitat, Joutsa (formerly Leivonmaki), Finland, July.

Jussi Murtosaari / Lapland Fritillary butterfly (Euphydryas iduna) newly emerged female, Lapland, Finland, July.

Jussi Murtosaari / Marsh Fritillary butterfly (Euphydryas aurinia) male, South Karelia, southern Finland, June.

Jussi Murtosaari / Map Butterfly (Araschnia levana) second generation male on fern, southern Finland, August.

Jussi Murtosaari / Northern Wall Brown (Lasiommata petropolitana) feeding on dandelion nectar, South Karelia, southern Finland, June.

Jussi Murtosaari / Poplar Admiral butterfly (Limenitis populi) male puddling on road, central Finland, June.

Jussi Murtosaari / Pearl Bordered Fritillary butterfly (Clossiana euphrosyne) male, central Finland, May.

Jussi Murtosaari / Pearl Bordered Fritillary (Clossiana euphrosyne) eating on a flower, central Finland, June.

Jussi Murtosaari / Painted Lady (Vanessa cardui) on flowers, Aland Islands, Finland, August.

Jussi Murtosaari / Queen of Spain Fritillary butterfly (Issoria lathonia) on anthemis, southwest Finland, July.

Jussi Murtosaari / Scarce Fritillary (Euphydryas maturna) drinking nutrients from carcass, Joutsa (formerly Leivonmaki), Finland, June.

Jussi Murtosaari / Thor's Fritillary (Boloria thore thore) Kitee, North Karelia, eastern Finland, June.

Jussi Murtosaari / Bog fritillary butterfly (Boloria eunomia) male, central Finland, June.

Jussi Murtosaari / Woodland ringlet butterfly (Erebia medusa ssp. polaris) Karigasniemi, Finland, July.

Jussi Murtosaari / Arran brown (Erebia ligea) in flight with two Silver-studded Blue butterflies (Plebejus argus) central Finland, July.

Jussi Murtosaari / Arctic Fritillary (Boloria chariclea) female, Lapland, Finland, July.

Jussi Murtosaari / Woodland brown butterfly (Lopinga achine) male in habitat, Kanta-Hame, southern Finland, June.

Jussi Murtosaari / Dark Green Fritillary butterfly (Argynnis aglaja) on Rosebay willowherb flower in meadow in habitat, Joutsa (formerly Leivonmaki), Finland, July.

Jussi Murtosaari / Dark Green Fritillary butterfly (Argynnis aglaja) feeding, eastern Finland, July.

Jussi Murtosaari / Freija Fritillary butterfly (Boloria / Clossiana freija) female laying eggs, central Finland, May.

Jussi Murtosaari / Freija Fritillary butterfly (Boloria / Clossiana freija) female, central Finland, May.

Jussi Murtosaari / Freija Fritillary butterfly (Boloria / Clossiana freija) female in habitat, central Finland, May.

Jussi Murtosaari / Lesser Marbled Fritillary butterfly (Brenthis ino) newly emerged female, Finland, July.

Jussi Murtosaari / Large Wall Brown butterfly (Pararge maera) male flying in habitat, central Finland, July.

Jussi Murtosaari / Large Heath butterfly (Coenonympha tullia) central Finland, June.

Jussi Murtosaari / Lapland Ringlet butterfly (Erebia embla) northern Finland, June.

Jussi Murtosaari / Norse Grayling butterfly (Oeneis norna) resting on a stone, Lapland, Finland, July.

Jussi Murtosaari / Meadow Brown butterfly (Maniola jurtina) female on flower, Aland Islands, Finland, July.

Jussi Murtosaari / Pearl-bordered Fritillary butterfly (Boloria euphrosyne) female sunbathing in habitat, central Finland, June.

Jussi Murtosaari / Peacock butterfly (Inachis io) with an ant, Finland, July.

Jussi Murtosaari / Peacock Butterfly (Inachis io) on willow by lake, Finland, May.

Jussi Murtosaari / Thor's Fritillary (Boloria / Clossiana thore borealis) on a flower, Lapland, Finland, July.

Jussi Murtosaari / Woodland brown butterfly (Lopinga achine) Kanta-Hame, southern Finland, July.

Jussi Murtosaari / Camberwell beauty butterfly (Nymphalis antiopa) Joutsa (formerly Leivonmaki), Finland, August.

Jussi Murtosaari / False Heath Fritillary butterfly (Melitaea diamina) male resting, Pirkanmaa, Finland, June.

Jussi Murtosaari / Frigga Fritillary (Boloria / Clossiana frigga) resting, central Finland, June.

Jussi Murtosaari / Glanville Fritillary butterfly (Melitaea cinxia) newly emerged female, Aland Islands, Finland, May.

Jussi Murtosaari / Large Wall Brown butterfly (Pararge maera) female, South Karelia, southern Finland, June.

Jussi Murtosaari / Map Butterfly (Araschnia levana) female generation I, southern Finland, June.

Jussi Murtosaari / Map Butterfly (Araschnia levana) feeding on anthemis, second generation, southern Finland, July.

Jussi Murtosaari / Painted Lady butterfly (Vanessa cardui) portrait, South Karelia, southern Finland, June.

Jussi Murtosaari / Pallas' Fritillary butterfly (Argynnis laodice) female on grass, southern Finland, August.

Jussi Murtosaari / Ringlet (Aphantopus hyperantus) on leaf, central Finland, July.

Jussi Murtosaari / Ringlet (Aphantopus hyperantus) on leaf, South Karelia, southern Finland, June.

Jussi Murtosaari / Peacock Butterfly (Inachis io) on buttercup, ventral view, showing duller side, central Finland, May.

Jussi Murtosaari / Large Heath butterfly (Coenonympha tullia) on cotton grass, central Finland, June.

Jussi Murtosaari / Arctic fritillary butterfly (Boloria chariclea) female, sunning on rocky ground, Lapland, Finland, July.

Jussi Murtosaari / Poplar Admiral butterfly (Limenitis populi) male puddling on road, central Finland, June.

Jussi Murtosaari / Mountain Fritillary (Boloria napaea) female on Moss Campion (Silene acaulis) Lapland, Finland, July.

Jussi Murtosaari / Purple Emperor butterfly (Apatura iris) female on ground, South Karelia, southern Finland, July.

Jussi Murtosaari / Poplar Admiral butterfly (Limenitis populi) male puddling on road, central Finland, July.

Jussi Murtosaari / Woodland brown butterfly (Lopinga achine) male in flight, Kanta-Hame, southern Finland, June.

Jussi Murtosaari / Thor's Fritillary (Boloria / Clossiana thore) on Campanula flower, Lapland, Finland, July.

Jussi Murtosaari / Small Tortoiseshell butterfly (Aglais urticae) feeding and sunbathing, central Finland, April.

Jussi Murtosaari / Ringlet (Aphantopus hyperantus) on Umbilifer flower, South Karelia, southern Finland, June.

Jussi Murtosaari / Mountain Fritillary butterfly (Boloria napaea) Lapland, Finland, July.

Jussi Murtosaari / Meadow Brown butterfly (Maniola jurtina) female, Aland Islands, Finland, July.

Jussi Murtosaari / Map Butterfly (Araschnia levana) second generation female, southern Finland, July.

Jussi Murtosaari / Map Butterfly (Araschnia levana) second generation female, southern Finland, July.

Jussi Murtosaari / Lesser Purple Emperor butterfly (Apatura ilia) male in oak tree, Finland, July.

Jussi Murtosaari / Lapland Ringlet butterfly (Erebia embla) northern Finland, June.

Jussi Murtosaari / Heath Fritillary butterfly (Melitaea athalia) South Karelia, southern Finland, June.