Nick Upton / Heath bee fly (Bombylius minor), sunning on an sandy bank, Arne heath, Dorset, UK, July.

Andy Sands / Downland bee-fly (Villa cingulata) female, this rare southern species is usually seen on calcareous grassland in the Chilterns, Buckinghamshire, England, UK, June

Andy Sands / Downland bee-fly (Villa cingulata) female, this rare southern species is usually seen on calcareous grassland in the Chilterns, Buckinghamshire, England, UK, June

Andy Sands / Downland bee-fly (Villa cingulata) male, this rare southern species is usually seen on calcareous grassland in the Chilterns, Buckinghamshire, England, UK, June

Kerstin Hinze / Greater bee fly (Bombylius) nectaring from Butterbur (Petasites hybridus) flowers, Bavarian Forest National Park, Germany, April.

Kerstin Hinze / Greater bee fly (Bombylius) nectaring from Butterbur (Petasites hybridus) flowers, Bavarian Forest National Park, Germany, April.

Kerstin Hinze / Greater bee fly (Bombylius) nectaring from Butterbur (Petasites hybridus) flowers, Bavarian Forest National Park, Germany, April.

David Woodfall / Long legged flies (Dolichopodidae) on puddle in foot print of Long Horn cattle. Knepp Wildland Project, formerly intensive farmland now turned to conservation and sustainable farming. Horsham, West Su...

Dave Bevan / Slow motion clip of a Dark edged bee fly (Bombylius major) nectaring from a Primrose flower (Primula vulgaris), Carmarthenshire, Wales, UK, May.

Rod Williams / Dark-edged bee-fly (Bombylius major) Beverley Court Gardens, Lewisham, London, England, UK. April.

Rod Williams / Common stiletto fly (Thereva nobilitata) Warwick Gardens, Peckham, London, England, UK. June.

Nick Upton / Downland villa bee fly (Villa cingulata) feeding on Common hogweed (Heracleum sphondylium) flowers, Wiltshire, UK, July, Locally Endangered species.