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...

Nick Upton / Close-up of a Meadow brown butterfly (Maniola jurtina) nectaring on a Greater knapweed flower (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, England, UK, June.

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 / Marbled white butterflies (Melanargia galathea) nectaring on a clump of Greater knapweed flowers (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, England, UK, June.

Nick Upton / Marbled white butterflies (Melanargia galathea) nectaring on a clump of Greater knapweed flowers (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, England, UK, June.

Steven David Miller / An Orange lacewing butterfly (Cethosia penthesilea), Cairns Botanical Gardens, Queensland, Australia. Captive. August.

Ross Hoddinott / Marbled white butterfly (Melanargia galathea) perched on bird's foot trefoil, Volehouse Moor, Devon, UK. July.

Ross Hoddinott / Marbled white butterfly (Melanargia galathea) resting among tall grasses and bathed in warm, early morning sunlight, Volehouse Moor, Devon, UK. July.

Ross Hoddinott / Marbled white butterfly (Melanargia galathea) roosting among tall grasses at sunrise and bathed in warm, early morning sunlight, Volehouse Moor, Devon, UK. July.

Konrad Wothe / Fritillary butterfly (Argynnis sp) with Scarce copper butterflies (Lycaena virgaureae) Queyras, Alps, France. August.