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

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

Stephen Dalton / Fly (Alophora hemiptera) Sussex, UK

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

Chris Mattison / Hoverfly (Syrphus ribesii) male, a wasp mimic, resting on leaf with small bugs.

Nigel Cattlin / Predatory midge (Feltiella spp.) and hoverfly (Syrphidae spp.) larvae among ivy aphids (Aphis hederae) on Fatshedera lizei, , Devon, England, UK. May.