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.

Ross Hoddinott / Common blue butterfly (Polyommatus icarus) resting on devil's bit scabious (Succisa pratensis), Vealand Farm, Devon, UK. August

Ross Hoddinott / Female chalkhill blue butterfly (Lysandra coridon) with wings closed resting on Devils-bit scabious (Succisa pratensis), Hatch Hill, Somerset, UK. August 2016.

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.

Guy Edwardes / 2020VISION / Marbled White Butterfly (Melanagria galathea) resting on Small Scabious (Scabiosa colombaria) flower, Badbury Rings, Dorset, UK, July. Did you know? The marbled white is actually a strikingly coloured...

Konstantin Mikhailov / Alpine meadows with Caucasian scabious (Scabiosa caucasica) in Bezengi gorge, July, 3000m. W-C Caucasus, Kabardino-Balkarskiy nature reserve, Russia

Wild Wonders of Europe / Radisics / Cream scabious (Scabiosa ochroleuca) in flower, Lake Skadar National Park, Montenegro, May 2008

Kim Taylor / Marbled white butterflies (Melanargia galathea) visiting Greater knapweed (Centaurea scabiosa) Dorset, England, digital composite