Nick Upton / Two Dark green fritillary butterflies (Argynnis aglaja) and a Narrow-bordered five-spot burnet moth (Zygaena lonicerae) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a chalk grassland...

Nick Upton / Six-spot burnet moth (Zygaena filipendulae), Marbled white butterflies (Melanargia galathea) and a Dark green fritillary (Argynnis aglaja) nectaring on a clump of Greater knapweed flowers (Centaurea s...

Nick Upton / Close-up of a Dark green fritillary (Argynnis aglaja) nectaring on a Greater knapweed (Centaurea scabiosa) flower and flying off, Wiltshire, England, UK, July.

Dave Watts / Dark green fritillary (Argynnis aglaja) on pink clover, south west France.

Hans Christoph Kappel / Chalkhill blue butterfly {Polyommatus coridon} resting. Germany.

Nick Upton / Dark green fritillary butterfly (Argynnis aglaja) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, UK, June.

Nick Upton / Two Dark green fritillary butterflies (Argynnis aglaja), Marbled white butterflies (Melanargia galathea) and a Narrow-bordered five-spot burnet moth (Zygaena lonicerae) nectaring on a Greater knapweed...

Nick Upton / Dark green fritillary (Argynnis aglaja) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a chalk grassland meadow, joined by a Meadow brown butterfly (Maniola jurtina), Wiltshire, Englan...

Nick Upton / Marbled white butterflies (Melanargia galathea) and a Dark green fritillary (Argynnis aglaja) nectaring on a clump of Greater knapweed flowers (Centaurea scabiosa) in a chalk grassland meadow, Wiltshi...

Duncan Usher / Dark Green Fritillary (Argynnis aglaja) butterfly male feeding on Susan (Rudbeckia sp) flower nectar, Hesse, Germany

Jussi Murtosaari / Dark green fritillary (Argynnis aglaja) on Field scabious (Knautia arvensis) Finland, July.

Lorraine Bennery / Dark green fritillary (Argynnis aglaja), Mercantour National Park, France, July.

Nick Upton / Slow motion close up of a Dark green fritillary (Argynnis aglaja) nectaring on a Greater knapweed (Centaurea scabiosa) flower alongside a Solitary mining bee (Andrena), Wiltshire, England, UK, July.

Nick Upton / Slow motion clip of a Dark green fritillary butterfly (Argynnis aglaja) nectaring on a Greater knapweed (Centaurea scabiosa) flower and being joined by a female Thick-legged flower beetle (Oedemera no...

Nick Upton / Slow motion close up view of a Dark green fritillary (Argynnis aglaja)landing to feed from a Greater knapweed (Centaurea scabiosa) flower and displacing a Marmalade hoverfly (Episyrphus balteatus), Wi...

Nick Upton / Dark green fritillary (Argynnis aglaja) nectaring on a Greater knapweed (Centaurea scabiosa) flower and flying off, Wiltshire, England, UK, July.

Paul Hobson / Dark-green fritillary butterfly (Argynnis aglaja) adult on pyramidal orchid, South Anstons, Sheffield, England, UK, July.

MYN / Dirk Funhoff / Queen of Spain fritillary butterfly (Issoria lathonia) caterpillar on pansy flower, Lorsch, Hessen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Queen of Spain fritillary (Issoria lathonia), Lorsch, Hessen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Queen of Spain fritillary (Issoria lathonia), Lorsch, Hessen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Queen of Spain fritillary (Issoria lathonia) caterpillar, Lorsch, Hessen, Germany. Meetyourneighbours.net project.

MYN / Dirk Funhoff / Queen of Spain fritillary butterfly (Issoria lathonia), Lorsch, Hessen, Germany. October. Meetyourneighbours.net project

Paul D Stewart / Ammonite (Cosmoceras proniae) from Jurrasic period, 165 million years ago, from Russia. Shown ithin the shell of modern Abalone (Haliotis sp.) This illustrates the preservation in the ammonite fossil...

Paul D Stewart / Ammonite (Placenticeras) shell from upper Cretaceous period 75 million year ago, showing iridescent ammolite gem skin, cracked and flaked in the typical 'dragon skin' pattern.

Paul Hobson / Dark-green fritillary (Argynnis aglaja) on flower, Coombes Dale, Derbyshire, England, UK, July.

MYN / Niall Benvie / Dark green fritillary (Argynnis aglaja) Scotland, UK, July.

Dave Bevan / Queen of Spain fritillary (Issoria lathonia) at rest on plant, Hungary June.

Dave Watts / Dark green fritillary (Argynnis aglaja) on pink clover, south west France.

Dave Watts / Dark green fritillary (Argynnis aglaja) on pink clover, south west France.

David Kjaer / Dark green fritillary butterfly (Argynnis aglaja) female, Wiltshire, UK, July.

David Kjaer / Dark green fritillary butterfly (Argynnis aglaja) female on flower, Wiltshire, UK, July.

Jussi Murtosaari / Queen of Spain fritillary butterfly (Issoria lathonia) newly emerged male, Parainen / Lansi-Turunmaa, Lounais-Suomi, Varsinais-Suomi / Southwestern Finland, Finland. July

Jussi Murtosaari / Queen of Spain fritillary butterfly (Issoria lathonia) newly emerged female, Parainen / Lansi-Turunmaa, Lounais-Suomi, Varsinais-Suomi / Southwestern Finland, Finland. July

Colin Varndell / Dark green fritillary butterfly (Argynnis aglaja) resting, Dorset, UK June.

Gary K. Smith / Dark green Fritillary butterfly (Argynnis aglaja) feeding on Creeping thistle (Cirsium arvense) England, UK, June.

Ernie Janes / Dark green fritillary (Argynnis aglaja) on creeping thistle. Burnham Overy sand dunes, Norfolk, UK, June.

Ernie Janes / Dark green fritillary (Argynnis aglaja) on creeping thistle. Burnham Overy sand dunes, Norfolk, UK, July.

Ernie Janes / Dark green fritillary (Argynnis aglaja) on creeping thistle. Burnham Overy sand dunes, Norfolk, UK, July.

Ernie Janes / Dark green fritillary (Argynnis aglaja) on creeping thistle. Burnham Overy sand dunes, Norfolk, UK, July.

Paul Harcourt Davies / Crab spider (Misumena vatia) with prey, Queen of Spain Fritillary (Issoria lathonia) near Orvieto, Umbria, Italy, July.

Gary K. Smith / Dark Green Fritillary (Argynnis aglaja) feeding on Globe thistle (Carduus nutans) Wells, North Norfolk, England,

Nick Upton / Dark green fritillary butterfly (Argynnis aglaja) feeding on Greater knapweed flower (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, UK, July.

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

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.

Thomas Marent / Queen Of Spain Fritillary (Issoria lathonia), Switzerland

Paul Harcourt Davies / Queen of Spain fritillary butterfly (Isoria lathonia) female, Podere Montecucco, Orvieto, Umbria, Italy, October

Paul Harcourt Davies / Queen of Spain fritillary butterfly (Issoria lathonia) feeding, Podere Montecucco, Orvieto, Umbria, Italy, July

Nick Upton / Head on view of a Dark green fritillary butterfly (Argynnis aglaja) feeding on Greater knapweed flower (Centaurea scabiosa) with long proboscis, chalk grassland meadow, Wiltshire, UK, July

Nick Upton / Dark green fritillary butterfly (Argynnis aglaja) feeding on Greater knapweed flower (Centaurea scabiosa) as another takes off in the background, chalk grassland meadow, Wiltshire, UK, July

Nick Upton / Dark green fritillary butterfly (Argynnis aglaja) resting on Pannonic thistle leaf (Cirsium pannonicum), Julian Alps, Slovenia, July

Nick Upton / Chalkhill blue butterflies (Polyommatus coridon) mating on Red clover flower (Trifolium pratense), chalk grassland, Wiltshire, UK, July

Nick Upton / Chalkhill blue butterflies (Polyommatus coridon), mating on Red clover flower (Trifolium pratense) with phoretic Chalcidoid wasp (Eulophidae; Tetrastichinae) a parasitoid of butterfly eggs, riding on...

Nick Upton / Chalkhill blue butterflies (Polyommatus coridon), mating on Red clover flower (Trifolium pratense) with phoretic Chalcidoid wasp (Eulophidae; Tetrastichinae) a parasitoid of butterfly eggs, riding on...

Nick Upton / Male Chalkhill blue butterfly (Polyommatus coridon), a Near Threatened species in the UK, extracting salts from animal dung, chalk grassland meadow, Wiltshire, UK, July

LYNN M. STONE / Close up view of Red abalone shell (Haliotis rufescens) photo shows three apertures / holes that living abalone had used for water exchange and the shell reveals the mother of pearl, or nacre, surface...

LYNN M. STONE / Red Abalone (Haliotis rufescens) shell interior showing nacreous mother of pearl. Santa Barbara, California, USA, February.

LYNN M. STONE / Red Abalone (Haliotis rufescens) shell interior showing nacreous mother of pearl. Santa Barbara, California, USA, February.

LYNN M. STONE / Red Abalone (Haliotis rufescens) shell interior showing nacreous mother of pearl. Santa Barbara, California, USA, February.

LYNN M. STONE / Close-up view of Red Abalone (Haliotis rufescens) shell. California, USA, February.

LYNN M. STONE / Close-up view of Red Abalone (Haliotis rufescens) shell. California, USA, February.

LYNN M. STONE / A Red Abalone (Haliotis rufescens) shell. California, USA, February.

Simon Colmer / Chalkhill Blue butterfly (Polyommatus coridon) eggs on twig, Sussex, UK, March

Kim Taylor / Chalkhill Blue Butterflies (Polyommatus coridon) males feeding on a rabbit skeleton. Surrey, UK, August.

Kim Taylor / Chalkhill Blue Butterfly (Polyommatus coridon) male on Ragwort. Surrey, UK, August.

Kim Taylor / Chalkhill Blue Butterfly (Polyommatus coridon) male on Marjoram (Origanum vulgare). Surrey, UK, August.

David Kjaer / Chalkhill Blue (Polyommatus coridon) male butterfly feeding on thistle, Wiltshire, UK, August.

David Kjaer / Chalkhill Blue (Polyommatus coridon) male butterfly on ground, Wiltshire, UK, August.

David Kjaer / Chalkhill Blue (Polyommatus coridon) male butterfly on stem, Wiltshire, UK, August.

Gary K. Smith / Chalkhill blue butterfly (Polyommatus coridon) male feeding on knapweed, Norfolk, UK, August

Gary K. Smith / Chalkhill blue butterflies (Polyommatus coridon) male and female in courtship behaviour, Norfolk, UK, August

Andy Sands / Dark Green Fritillary butterfly (Argynnis aglaja) at rest on Thistle flower, with wings closed, UK, Captive

Andy Sands / Dark Green Fritillary butterfly (Argynnis aglaja) at rest on Thistle flower, with wings open, UK, Captive

Robert Thompson / Dark green fritillary butterfly (Argynnis aglaja) on flowers, wings closed, Murlough NNR, County Down, Northern Ireland, UK

David Kjaer / Female Dark green fritillary (Argynnis aglaja) Dorset, England, August

Laurie Campbell / Dark Green Fritillary Butterfly (Mesoacidalia aglaia / Argynnis aglaja) at rest, Lindisfarne, Northumberland, England, July

Wild Wonders of Europe / Maitland / Queen of spain fritillary butterfly (Issoria lathonia) feeding on flower, Galicica National Park, Macedonia, June 2009

Kim Taylor / Chalkhill blue butterfly (Polyommatus coridon) male taking off from flower, multiple exposure 7 images at 20 millisecond intervals, Surrey, UK

Russell Cooper / Female Chalkhill Blue Butterfly (Polyommatus coridon) North Downs, Surrey, UK

Russell Cooper / Female Chalkhill Blue Butterfly (Polyommatus coridon) feeding from Marjoram (Origanum vulgare) North Downs, Surrey, UK

Andy Sands / Chalkhill Blue butterfly (Polyommatus coridon) Male feeding on flowers of Marjoram, Captive, UK

Andy Sands / Chalkhill Blue butterfly (Polyommatus coridon) Male feeding on flowers of Marjoram, Captive, UK

Steve Knell / Dark green fritillary butterfly (Argynnis aglaja) on a spotted orchid flower, UK

PREMAPHOTOS / Dark-green fritillary butterfly (Argynnis aglaja) feeding from Hawkbit flower UK

PREMAPHOTOS / Chalkhill blue butterfly (Polyommatus coridon) UK

Adrian Davies / Dark green fritillary butterfly (Argynnis aglaja) Devon, UK

David Kjaer / Male Chalkhill Blue (Polyommatus coridon) showing underwing, resting on flowers, Wiltshire, UK

David Kjaer / Chalkhill Blue butterfly {Polyommatus coridon} male, Wiltshire, England, UK.

David Kjaer / Chalkhill Blue butterfly {Polyommatus coridon} male, Wiltshire, England, UK.

Kim Taylor / Dark Green Fritillary {Argynnis aglaja} male on Knapweed, Dorset, England.

Duncan Mcewan / Dark Green Fritillary (Mesoacidalia aglaja) Scotland , UK

Paul Hobson / Dark green fritillary butterfly {Argynnis aglaja} at rest on Meadow cranesbill flower, Peak District, UK

Paul Hobson / Dark green fritillary butterfly {Argynnis / Mesoacidalia aglaja} resting on Northern hawkbeard, Peak District, UK.

Paul Hobson / Dark green fritillary butterfly {Argynnis aglaja} at rest on Meadow cranesbill, Peak District, Derbyshire, UK.

Paul Hobson / Queen of Spain fritillary butterfly {Issoria lathonia} Spain

Paul Hobson / Queen of Spain fritillary butterfly {Issoria lathonia} Spain