Nick Upton / Close up view of a Marbled white butterfly (Melanargia galathea) nectaring on a Field scabious (Knautia arvensis) flower, with another trying to court with it, Wiltshire, England, UK, July.

Michel Poinsignon / Field scabious flower (Knautia arvensis) with green metallic flower beetle, Lorraine, France, May

Nigel Cattlin / Pollen beetles (Brassicogethes aeneus) on Field scabious (Knautia arvensis). Berkshire, England, UK. July.

Nick Upton / Brassy longhorn moth (Nemophora metallica) male animal standing on a Field scabious (Knautia arvensis) flower, the host plant for the larvae of this species, waiting for females to arrive, chalk grass...

Nick Upton / Goldenrod crab spider (Misumena vatia) female on Field scabious (Knautia arvensis) waiting for prey to land, legs raised, Wiltshire, England, UK. July.

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

Ernie Janes / Small tortoiseshell butterfly (Aglais urticae) feeding on Scabious (Knautia arvensis) flowers, in hay meadow Wensum Valley, Norfolk, England, UK. July.

Ernie Janes / Wild flowers including Ladies bedstraw (Galium verun) Knapweed (Centaurea nigra) and Field scabious (Knautia arvensis) in hay meadow, Wensum Valley, Norfolk, England, UK, July.

Nick Upton / Clouded yellow butterfly (Colias croceus) nectaring on a Field scabious flower (Knautia arvensis), Picos de Europa mountains, Spain, August.

Gary K. Smith / Field scabious (Knautia arvensis) in flower, Norfolk, UK, July

Gary K. Smith / Field scabious (Knautia arvensis) in flower, Norfolk, UK, July

Nick Upton / Small skipper butterfly (Thymelicus sylvestris) nectaring on a Field scabious flower (Knautia arvensis) with its long proboscis, chalk grassland meadow, Wiltshire, UK, July