Nick Upton / Sand-loving / Square-headed wasp (Tachysphex costae) feeding on Sea holly flowers (Eryngium maritimum) on a beach, Sardinia, Italy, June.

Robert Thompson / Common wasp (Vespula vulgaris) flying to fuchsia flower, Banbridge, County Down, Northern Ireland.

John Abbott / Paper wasp (Polistes metricus) flying from flower, Tuscaloosa County, Alabama, USA Controlled conditions. September

Heather Angel / Wasp walking around a Spanish love-in-a-mist (Nigella hispanica) flower to sip nectar from ring of blue nectaries, thorax and abdomen pick up pollen from downward facing anthers that swipe over the wa...

Adrian Davies / European beewolf (Philanthus triangulum) on Gorse (Ulex sp). Surrey, England, UK. August.

Heather Angel / Saxon wasp (Dolichovespula saxonica) and Common red soldier beetles (Rhagonycha fulva) feeding on Broad leaved helleborine (Epipactis helleborine). Surrey, England, UK. August.

Heather Angel / Parasitic wasp (Gasteruption assectator) nectaring on Common rue (Ruta graveolens). Surrey, England, UK. July.

Heather Angel / Wasp (Hymenoptera) robbing nectar from Henry's lily (Lilium henryi). Surrey, England, UK. August.

Heather Angel / Wasp (Vespula germanica) nectaring on Pineapple lily (Eucomis comosa). Pollen is deposited on underside of wasp's hairy body and transferred to stigma of next flower visited. Lily cultivated in ga...

Heather Angel / Wasp (Dolichovespula sp) emerging from nectaring on Michailovski fritillary (Fritillaria michailovskyi) flower. To reach the nectaries it squeezes past anthers picking up large pollen load on head and...

Heather Angel / Wasp nectaring on Marsh marigold (Caltha palustris), picking up pollen on head, thorax and hairs on body. Turkey. May.

Heather Angel / Hornet (Vespa crabro) nectaring on Ivy (Hedera helix), pollen transferred to hairy legs and hairs on underside of head, thorax and abdomen. In woodland, Surrey, England, UK. October.