Rod Williams / European potter wasp (Ancistrocerus gazella) Sutcliffe Park Nature Reserve, Eltham, London, England, UK. August.

Andy Sands / Mason wasp (symmorphus gracilis) on sandy bank of old quarry, Oxfordshire, England, UK, August

Nick Upton / Insect hotel with drilled logs and bundles of bamboo stems, some with partially completed mud nests of Mason wasps wasps (Ancistrocerus sp), garden, Gloucestershire, UK, May.

Andy Sands / Mason wasp (Symmorphus gracilis) collecting mud for nest building, Oxfordshire, England, UK, September

Andy Sands / Mason wasp (Ancistrocerus gazella) dormant in flower during cold weather conditions, Surrey, England, UK, June

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

Andy Sands / Mason wasp (Ancistrocerus scoticus) female collecting mud to build nest, Cornwall, England, UK, September

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

Andy Sands / Heath potter wasp (Eumenes coarctatus) female using her mandibles to collect mud for nest building, Surrey, England, UK, August

Pascal Pittorino / European potter wasp (Ancistrocerus gazella) feeding on Ivy flowers (Hedera helix) in a garden, Toulon, Var, France, October

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) inspecting a nest hole in a drilled log within an insect hotel, Gloucestershire garden, UK, April.

Alex Hyde / Heath potter wasp (Eumenes coarctatus) nest, Dorset, UK. August.

Pascal Pittorino / European potter wasp (Ancistrocerus gazella) on Wood sorrel flower (Oxalis articulata), Toulon, Var, Provence, France, October.

MYN / Pierre Escoubas / Potter / mason wasp (Eumenes sp) Valbonne, France, August. Meetyourneighbours.net project.

MYN / Pierre Escoubas / Potter / mason wasp (Eumenes sp) Valbonne, France, August. Meetyourneighbours.net project.

MYN / Pierre Escoubas / Potter / mason wasp (Eumenes sp) Corsica, June. Meetyourneighbours.net project.

Ann & Steve Toon / Potter or mason wasp nest (Delta emarginatum), Kunene region, Namibia, Africa, May

Nick Upton / Mason Wasp (Ancistrocerus sp.) grooming itself on a leaf, Wiltshire garden, UK, May.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) flying towards nest hole in an insect hotel with a ball of mud in its jaws to seal a nest cell with, Wiltshire garden, UK. July.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) sealing its nest hole in an insect hotel with a ball of mud held in its jaws, Wiltshire garden, UK. July.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) sealing its nest hole in an insect hotel with a ball of mud held in its jaws, Wiltshire garden, UK. July.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) collecting a ball of mud in its jaws to seal up its nest in an insect hotel, Wiltshire garden, UK. July.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) female, at entrance to nest in an insect hotel with green caterpillar prey for its larvae to feed on, Wiltshire garden, UK. July.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) female, at entrance to nest hole in an insect hotel with a small beetle grub for its larvae to feed on, Wiltshire garden, UK. July.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) female, inspecting a nest hole in an insect hotel, Wiltshire garden, UK. July.

Nick Upton / Mason wasp / Potter wasp (Ancistrocerus sp.) entering its nest hole in an insect hotel close to a Wood-carving leafcutter bee (Megachile ligniseca) entering a larger bamboo tube, Wiltshire garden, UK....

Roman Willi / Great potter wasp (Delta unguiculatum) entering frame and building nest, Lucerne, Switzerland, June.

Roman Willi / Great potter wasp (Delta unguiculatum) entering frame and adding material to nest entrance, Lucerne, Switzerland, June.

Jiri Lochman / Potter wasp (Delta latreillei) female, building mud nest using water mixed with dirt collected from termite mound, Durba Hills, Little Sandy Desert, Western Australia.

Jiri Lochman / Potter wasp (Delta latreillei) female, collecting soil from freshly built section of a termite mound and mixing it with the water, the wet muddy soil will be used to build the mud nest, Durba Hills, L...

Jiri Lochman / Potter wasp (Delta latreillei) female, placing a moth caterpillar into the mud nest where it will serve as food for the wasp larva, Durba Hills, Little Sandy Desert, Western Australia.

Jiri Lochman / Potter wasp (Delta latreillei) female, building mud nest using water mixed with dirt collected from termite mound, Durba Hills, Little Sandy Desert, Western Australia.

Jiri Lochman / Potter wasp (Delta bicinctum) feeding on Myrtle (Myrtus sp.) flowers, Yanchep National Park, north of Perth, Western Australia.

Marie Lochman / Potter wasp (Delta bicinctum) feeding on Myrtle flowers, Yanchep National Park, north of Perth, Western Australia.

Doug Wechsler / Bramble mason wasp (Ancistrocerus adiabatus) nectaring on Goldenrod (Solidago sp.) flower, Pennsylvania, USA. September.

Nick Upton / Heath potter wasp (Eumenes coarctatus) stocking a clay nest pot attached to a Gorse bush with a paralysed moth caterpillar, Devon, UK, September.

Nick Upton / Female Heath potter wasp (Eumenes coarctatus) taking off with ball of clay in her jaws to add to nest she is building in nearby bush, Devon, UK. September.

Nick Upton / Weathered clay nest built by Heath potter wasp (Eumenes coarctatus) attached to Gorse bush (Ulex sp.) after emergence of wasp, Devon, UK. September.

Nick Upton / Two completed clay nests built by Heath potter wasp (Eumenes coarctatus) attached to Gorse bush (Ulex sp.), Devon, UK. September.

Nick Upton / Completed clay nest built by Heath potter wasp (Eumenes coarctatus), sealed, attached to Ling heather bush (Calluna vulgaris), Devon, UK. September.

Nick Upton / Completed clay nest built by Heath potter wasp (Eumenes coarctatus), sealed, attached to Ling heather bush (Calluna vulgaris), Devon, UK. September.

Nick Upton / Heath potter wasp (Eumenes coarctatus) about to stock clay nest pot attached to Gorse bush (Ulex sp.) with paralysed Pug moth (Eupithecia sp) caterpillar, Devon, UK. September.

Nick Upton / Heath potter wasp (Eumenes coarctatus) stocking clay nest pot attached to Gorse bush (Ulex sp.) with paralysed moth caterpillar, Devon, UK. September.

Alan Williams / Solitary wasp (Ancistrocerus nigricornis) gathering mud in garden for nest building, Cheshire, UK, May.