MYN / Gil Wizen / Human botfly (Dermatobia hominis), adult and larva. Cayo District, Belize. Composite image. Meetyourneighbours.net project

Richard Du Toit / Burchell's Zebra (Equus burchellii) reacting to parasitic Bot Fly (Oestridae) trying to lay eggs on it, KwaZulu-Natal, South Africa

Cyril Ruoso / Green blowfly (Lucilia sericata) on Prunus (Prunus sp) blossom. Bourgogne-Franche-Comte, France. April.

Heather Angel / Blowfly (Calliphora sp) nectaring on Common rue (Ruta graveolens). Surrey, England, UK. July.

Heather Angel / Flesh fly (Sarcophaga sp) nectaring on Bi-coloured pineapple lily (Eucocmis bicolor). Fly attracted by flower's rotting carion smell. Pollen is transferred via thorax and legs of fly. Cultivated i...

Rod Williams / Bluebottle fly (Calliphora vomitoria) on ivy leaf, showing blue abdomen. Beverley Court Gardens, Lewisham, England, November

Konrad Wothe / Fly (Gymnosoma rotundatum) Bavaria, Germany. June.

Philippe Clement / Parasite fly / tachinid fly (Tachina fera) feeding on nectar from Hogweed (Heracleum sphondylium) in summer, France. August.

Ernie Janes / Flesh fly (Sarcophaga sp) feeding on ripe plums.

Ernie Janes / Flesh fly (Sarcophaga sp) close up portrait.

Ernie Janes / Flesh fly (Sarcophaga sp) close up portrait.

Philippe Clement / Tachina flies (Tachina fera) nectaring on Umbellifer (Apiaceae) flowers in summer, Luxembourg, August.

Bernard Castelein / Fly (Eriothrix rufomaculata), KLein Schietveld, Brasschaat, Belgium. June

Rod Williams / Ladybird fly (Gymnosoma rotundatum) a rare / localised species Brockley Cemetery, Lewisham, London, England, UK. May.

Jiri Lochman / Green blowfly (Lucilia sericata) male, Western Australia.

Jiri Lochman / Snail parasite blowfly (Amenia imperialis) Cape Tribulation, North-eastern Queensland, Australia.

Rod Williams / Greenbottle (Lucilia sp) Brockley Cemetery, Lewisham, London, England, UK. July.

MYN / Lily Kumpe / Blowfly (Chrysomya sp) Queensland, Australia. Meetyourneighbours.net project.

MYN / Lily Kumpe / Green blowfly (Lucilia sericata) Queensland, Australia. Meetyourneighbours.net project.

MYN / Joao P. Burini / Flesh fly (Sarcophagidae) Sorocaba, Sao Paulo, Brazil. Meetyourneighbours.net project.

Dave Bevan / Giant tachinid fly (Tachina grossa) nectaring on a sedum flower, Carmarthenshire, Wales, UK

Andy Sands / Tachnid fly (Phasia hemiptera) male, the female lays its eggs directly onto Forest Bugs and Green Shield Bugs where the larvae live as parasites, Hertfordshire, England, August

Andy Sands / Tachnid fly (Phasia hemiptera) male, the female lays its eggs directly onto Forest Bugs and Green Shield Bugs where the larvae live as parasites, Hertfordshire, England, August

Rod Williams / Greenbottles (Lucilia sp) mating pair, Ladywell Fields, Lewisham, South East London, England, UK, July.

Alex Hyde / Greenbottle (Lucilia caesar) feeding on Hemp agrimony (Eupatorium cannabinum) Strumpshaw Fen, Norfolk, UK, September.

Nick Upton / Hoverfly (Eristalis nemorum) and Greenbottle (Lucilia) nectaring on Wild marjoram (Origanum vulgare) flowers in a chalk grassland meadow, Wiltshire, England, UK, August.

Kim Taylor / Parasite fly (Tachina fera) on Eryngium. Surrey, England, UK, August.

Kim Taylor / Tachinid fly (Dexiosoma caninum). Surrey, England

Nick Upton / Tachinid fly (Nowickia ferox) with worn wings, chalk grassland meadow, Wiltshire, UK, July.

Andy Sands / Tachnid fly (Phyllomya volvulus) Resting on leaf after rain shower, Oxfordshire, England, UK, June

Rod Williams / Greenbottle flies (Lucilia sp) mating pair, Brockley, Lewisham, London, UK June

Doug Wechsler / Green bottle fly (Lucilia sp) pollinating white snakeroot, Philadelphia, USA October

John Abbott / Tachinid or Parasitic fly (Epalpus signifer) flying Travis County, Texas, USA. Controlled conditions. September

John Abbott / Tachinid or parasitic fly (Epalpus signifer) flying Travis County, Texas, USA. Controlled conditions. September

Nick Upton / Parasite fly / Tachinid fly (Zophomyia temula), a nationally scarce species, feeding on Common hogweed (Heracleum sphondylium) on grassland meadow cleared of scrub to improve the habitat for bees and...

Rod Williams / Tachinid Fly (Thelaira nigrina) Hutchinson's Bank, New Addington, London May

Rod Williams / Tachinid fly (Tachina fera) Feeding on ragwort Hutchinson's Bank, New Addington, London September

Rod Williams / Tachinid Fly (Linnaemya picta) Brockley Cemetery, Lewisham, London, UK. August

Rod Williams / Tachinid fly (Nowickia ferox) grooming on wild marjoram, Hutchinson's Bank, New Addington, London August

Rod Williams / Parasitic Fly (Phania funesta) Tachinidae On field bindweed Brockley Cemetery, Lewisham, London, UK. August

Rod Williams / Parasitic fly (Eriothrix rufomaculata) on Tansy (Tanacetum) Brockley, Lewisham, London, UK. July.

Andy Sands / Tachnid fly (Prosena siberita) Berkshire, England, UK, August

Andy Sands / Tachnid fly (Phasia hemiptera) male feeding on flower of wild parsnip (pastinaca sativa), Oxfordshire, England, UK, August

Andy Sands / Tachnid fly (Phasia hemiptera) male feeding on flower of wild parsnip (Pastinaca sativa), Oxfordshire, England, UK, August

Andy Sands / Tachnid fly (Prosena siberita), Berkshire, England, UK, August

Rod Williams / Tachinid fly (Thelaira nigripes) Brockley Cemetery, Lewisham, London, UK August

Stephen Dalton / Fly (Alophora hemiptera) Sussex, UK

Nick Upton / Satellite fly (Craticulina sp.), a kleptoparasite of sand wasps, feeding on Rock samphire flowers (Crithmum maritimum) on a sandy beach close to several host nests, Algarve, Portugal, August 2013.

Nick Upton / Satellite fly (Craticulina sp.), a kleptoparasite of sand wasps, feeding on Rock samphire flowers (Crithmum maritimum) on a sandy beach close to several host nests, Algarve, Portugal, Portugal.

Nick Upton / Parasite fly / Tachinid fly (Tachina fera) a parasite of noctuid moths, feeding on Ragwort flowers (Senecio jacobaea) in a woodland clearing, GWT Lower Woods reserve, Gloucestershire, UK, September.

Nick Upton / Two Greenbottles / Blowflies (Lucilia sp.) foraging on a ripe Blackberry (Rubus plicatus), GWT Lower Woods reserve, Gloucestershire, UK, July.

Nick Upton / Parasite fly / Tachinid fly (Gymnocheta viridis), a parasite of lepidopteran caterpillars, sunning on an ivy leaf on a woodland edge, Wiltshire, UK, April.

Rod Williams / Parasitic fly (Eriothrix rufomaculata) on Tansy flower, Brockley, Lewisham, London, England, August.

Rod Williams / Parasitic fly (Eriothrix rufomaculata) on tansy flower, Brockley, Lewisham, London, England, August.

Rod Williams / Female Tachinid fly (Cistogaster globosa) on Tansy flower, Brockley, Lewisham, London, England, August.

Rod Williams / Greenbottle (Lucilia sp) on Everlasting sweet pea flower, Brockley Cemetery, Lewisham, London, England, August.

Will Watson / Honey bee (Apis mellifera) and Green bottle fly (blow fly), on thistle flower, Ceredigion, Wales, UK, August.

Rod Williams / Flesh fly (Sarcophaga sp) pair mating on bramble leaf, Brockley Cemetery, Lewisham, London, England, May.

Konrad Wothe / Tachnid fly (Tachinidae) Panguana Reserve, Huanuca province, Amazon basin, Peru.

Georgette Douwma / Flesh fly (Sarcophaga carnaria) UK.

Georgette Douwma / Flesh fly (Sarcophaga carnaria), close up showing compound eyes. UK.

MYN / Gil Wizen / Human botfly (Dermatobia hominis), adult, lateral view. Cayo District, Belize Meetyourneighbours.net project

MYN / Gil Wizen / Human botfly (Dermatobia hominis), larva. Cayo District, Belize Meetyourneighbours.net project

MYN / Gil Wizen / Human botfly (Dermatobia hominis), adult, dorsal view. Cayo District, Belize Meetyourneighbours.net project

MYN / Marc Pihet / Flesh fly (Sarcophaga carnaria), Maine-et-Loire, France, September. meetyourneighbours.net project

MYN / Marc Pihet / Flesh fly (Sarcophaga carnaria), Maine-et-Loire, France, September. meetyourneighbours.net project

MYN / Marc Pihet / Flesh fly (Sarcophaga carnaria), Maine-et-Loire, France, September. meetyourneighbours.net project

MYN / Marc Pihet / Flesh fly (Sarcophaga carnaria), Maine-et-Loire, France, September. meetyourneighbours.net project

Andy Sands / Tachnid fly (Tachina grossa) Surrey, England, UK. August.

Andy Sands / Tachnid fly (Tachina grossa) Surrey, England, UK. August.

Stephen Dalton / Parasitic fly (Dexia) Sussex, England, UK. July.

Rod Williams / Tachinid fly (Gymnosoma rotundatum) grooming, Brockley cemetery, Lewisham, London, UK, September.

Jussi Murtosaari / Flies (Brachycera) on leaf, Parikkala, Etela-Karjala / South Karelia, Etela-Suomi / South Finland, Finland. June

Rod Williams / Flesh Flies (Sarcophaga sp) Mating pair Ladywell Fields, Lewisham, London, England, UK. April

Rod Williams / Tachinid fly (Tachina fera) Brockley cemetery, Lewisham, London, England, UK. May

Rod Williams / Flesh-fly (Sarcophaga Sp) feeding on speedwell, Hutchinson's Bank, New Addington, South London, England, UK, May

Rod Williams / Greenbottles (Lucilia Sp) mating pair showing colour variation, Ladywell Fields, Lewisham, London, England, UK. April

Jussi Murtosaari / Fly (Brachycera) on Lily of the Valley berries, Parikkala, Etela-Karjala / South Karelia, Etela-Suomi / South Finland, Finland. September

Alex Hyde / Greenbottle (Lucilia caesar) Peak District National Park, Derbyshire, UK. July.

John Abbott / Parasitic Fly (Tachina sp.) on white background, Missoula County, Montana, USA.

MYN / Pierre Escoubas / Blow fly / greenbottle (Lucilia sp) Valbonne, France, July. Meetyourneighbours.net project.

Richard Du Toit / Burchell's Zebra (Equus burchellii) reacting to parasitic Bot Fly (Oestridae) trying to lay eggs on it, KwaZulu-Natal, South Africa

Adrian Davies / Bluebottles (Calliphora sp.) trapped in the sticky tendrils of a Flycatcher bush (Roridula gorgonias), Kew Botanic Gardens, UK. Occurs in South Africa.

Robin Chittenden / Greenbottle Fly (Lucilia sp) on leaf, England, UK, July.

Stephen Dalton / Tachinid fly (Alophora hemiptera) parasitic species. Sussex, England, UK, August.

Stephen Dalton / Green bottle (Lucilia sp) on faeces, Sussex, England, UK, August.

Stephen Dalton / Tachinid fly (Alophora) Sussex, England, UK, August.

Rod Williams / Flesh-fly (Sarcophaga sp) grooming, Brockley cemetery, Lewisham, England, UK, September.

Rod Williams / Greenbottles (Lucilia sp) feeding on dog faeces Lewisham, London, England, UK, September.

Nick Upton / African flesh flies (Sarcophaga africa) mating on a reed stem, Crete, Greece, May.

Daniel Heuclin / Human botfly (Dermatobia hominis) larvae, on leaf, French Guiana.

Daniel Heuclin / Human botfly (Dermatobia hominis) larvae, on leaf, French Guiana.

Daniel Heuclin / Human botfly (Dermatobia hominis) larvae in dogs skin, showing breathing tube, French Guiana.

Daniel Heuclin / Human botfly (Dermatobia hominis) larvae in dogs skin, showing breathing tube, French Guiana.

Daniel Heuclin / Human botfly (Dermatobia hominis) larvae, on dog fur, French Guiana.