Cyril Ruoso / Dance fly (Empis tesselata) on blade of grass. Yonne, Bourgogne-Franche-Comte, France. April.

Rod Williams / Male Dance Fly (Empis tessellata) Brockley Cemetery, Lewisham, London, UK. May

Rod Williams / Dance Fly (Empis tessellata) Brockley Cemetery, Lewisham, London, UK. June

Rod Williams / Dance fly (Empis tessellata) Sutcliffe Park Nature Reserve, Eltham May

Andy Sands / Dance flies (Empis tessellata) mating while female eats gift presented by male, Bedfordshire, England, UK. May

Nick Upton / Dance fly (Empis tessellata) feeding on Common hogweed flowers (Heracleum sphondylium), Wiltshire pastureland, Marlborough Downs, UK, June.

Jussi Murtosaari / Dance fly (Empis borealis) male copulating female, holding with dead male nuptual gift. central Finland, May.

Laurent Geslin / Dance fly (Empis livida) pair mating, with the female hanging below the male and feeding on its gift, a domestic fly, UK

Nick Upton / Male Dance Fly (Empis tessellata) resting on a leaf, Wiltshire garden, UK, May.

Laurent Geslin / Dance fly (Empis livida) on Oil seed rape (Brassica napus) crop, Switzerland

Nick Upton / Male Dance Fly (Empis trigramma) with complex genitalia used to provide liquid gift to females during mating, standing on Yellow Rocket (Barbarea vulgaris) flower buds. Wiltshire, UK, April.

Nick Upton / Dance fly (Empis trigramma) portrait of female standing on a leaf, Wiltshire, UK, May.

Nick Upton / Mating Dance Flies (Empis opaca) hanging from a grass stem, with female feeding on March fly courtship gift provided by male. Wiltshire pastureland, UK, May.

Nick Upton / Pair of Dance Flies (Empis opaca) mating, hanging from a grass stem, with female feeding on March Fly courtship gift provided by male. Wiltshire pastureland, UK, May.

Nick Upton / Dance fly (Empis tessellata) feeding on Wild Angelica (Angelica sylvatica) nectar, Wiltshire, UK, May

Nick Upton / Dance fly (Empis livida) sun basking on a leaf, garden, Wiltshire, UK, spring

Nick Upton / Dance fly (Empis tessellata) feeding on Wild Angelica (Angelica sylvatica) nectar, Wiltshire, UK, May

Premaphotos / Dance fly (Empis livida) mating pair with the female hanging below the male and feeding on his 'gift' of a mirid bug, UK

Premaphotos / Dance fly (Empis livida) mating pair with the female hanging below the male and feeding on his gift of a dolichopodid fly, UK

Premaphotos / Dance fly (Empis stercorea) male (left) waving his wings and pedalling his legs at female in courtship, UK

Premaphotos / Dance fly (Empis stercorea) male (right) vibrating his wings in courtship of the female, UK

Premaphotos / Dance fly (Empis stercorea) female feeding on a male of her own species, UK

Premaphotos / Female dance fly (Empis trigramma) feeding on the gift of a droplet of liquid injected into her by the male during mating, UK

Premaphotos / Female dance fly (Empis trigramma) feeding on the gift of a droplet of liquid injected into her by the male during mating, UK

Premaphotos / Dance fly (Empis trigramma) mating pair. During mating, as well as sperm, the male injects a liquid gift into the female on which she will feed after mating is finished, UK

Premaphotos / Dance fly (Empis trigramma) mating pair. During mating, as well as sperm, the male injects a liquid gift into the female on which she will feed after mating is finished, UK

Premaphotos / Dance fly (Empis trigramma) male (left) courting a female, UK.

Premaphotos / Dance fly (Empis trigramma) mating pair. During mating, as well as sperm, the male injects a liquid gift into the female on which she will feed after mating is finished, UK.

Premaphotos / Dance fly (Empis tessellata) female feeding from common Buckthorn flowers, UK

Premaphotos / Dance fly (Empis / Polyblepharis opaca) mating pair with the female feeding on the male's gift of a fly, UK

Premaphotos / Dance fly (Empis livida) mating pair with the female hanging below the male and feeding on his 'gift' of a dolichopodid fly, UK

Premaphotos / Dance fly (Empis / Polyblepharis opaca), male with a prospective gift, a dead Mayfly, for any likely female, UK

Premaphotos / Female dance fly (Empis trigramma) showing her abdomen swollen with eggs as she feeds on a chironomid midge, UK

Andy Sands / Dagger flies (Empis livida) pair mating at dawn with dew, Hertfordshire, England, UK. May. Focus stacked.

Jussi Murtosaari / Dance fly (Empis borealis), mating pair, Finland, May.

Andy Sands / Dance Fly (Empis opaca) Feeding on Micro Moth, Hertfordshire, England, UK, April