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) 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 (Hilara maura) male showing the enlarged front legs containing silk glands, 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