Duncan Mcewan / Silk button spangle galls on Oak casued by Wasp (Neuroterus albipes). Scotland, UK, Europe

Nick Upton / Burdock gall fly (Terellia tussilaginis) female feeding on an Oxeye daisy / Marguerite flower (Leucanthemum vulgare) chalk grassland meadow, Wiltshire, UK, August.

Colin Varndell / Robin's pincushion gall caused by wasp (Diplolepis roase) on dog rose (Rosa canina). Dorset, UK September 2012

Laurie Campbell / Oak spangle gall (Neuroterus quercusbaccarum) on the underside of a sessile / durmast oak leaf, Roxburghshire, Scotland, September

Laurie Campbell / Cherry gall (Diplolepis quercusfolii) on underside of oak leaf with Oak spangle galls (Neuroterus quercusbaccarum) Loch Lomond and the Trossachs National Park, Stirlingshire, October

Nick Upton / Gall fly / Greater fruit fly (Terellia colon) female on flowerbud of host plant, Greater knapweed (Centaurea scabiosa), chalk grassland, Wiltshire, UK, June.

Nick Upton / Gall fly / Greater fruit fly (Terellia colon) male on flowerbud of host plant, Greater knapweed (Centaurea scabiosa), chalk grassland, Wiltshire, UK, June.

Nick Upton / Gall fly / Greater fruit fly (Terellia colon) female extending and flexing long ovipositor after mating in preparation for laying eggs in flowerbud of host plant, Greater knapweed (Centaurea scabiosa)...

Simon Colmer / Plant gall (Tetraneura ulmi) on Wych elm (Ulmus glabra) UK

Simon Colmer / Robin's Pincushion / Bedeguar Gall on rose, caused by the tiny Gall wasp (Diplolepis rosae) Levin Down Nature Reserve, Sussex, UK, August

Simon Colmer / Robin's Pincushion / Bedeguar Gall on rose, caused by the tiny Gall wasp (Diplolepis rosae) Levin Down Nature Reserve, Sussex, UK, August

Simon Colmer / Robin's Pincushion / Bedeguar Gall on rose, caused by the tiny Gall wasp (Diplolepis rosae) Levin Down Nature Reserve, Sussex, UK, August

Simon Colmer / Lime nail / bugle galls on Lime leaf caused by Gall mite (Eriophyes tiliae) Sussex, UK, July

Simon Colmer / Lime nail / bugle galls on Lime leaf caused by Gall mite (Eriophyes tiliae) Sussex, UK, July

Simon Colmer / Lime nail / bugle galls on Lime leaf caused by Gall mite (Eriophyes tiliae) Sussex, UK, July

Colin Varndell / Common spangle galls of the Gall wasp (Neuroterus quercusbaccarum) on underside of oak leaf, Dorset, UK, September

Colin Varndell / Common Spangle Galls of the Gall Wasp (Neuroterus quercusbaccarum) on underside of oak leaf. Dorset, UK, September.

Ross Hoddinott / Marble galls of Oak marble gall wasp (Andricus kollari) on twig of English oak (Quercus robur). Broxwater, Cornwall, UK, August

Adrian Davies / Robin's Pin Cushion / Bedeguar gall, on Dog rose (Rosa canina) caused by the Gall Wasp (Diplolepis rosae) UK, September

Russell Cooper / Bedeguar gall / Robin's pin cushion (Diplolepis rosae) growing on Dog rose (Rosa canina) South London, UK, August

Stephen Dalton / Common oak gall wasp (Cynips quercusfolii) exposed inside oak gall, UK

Nick Upton / Female Gall fly (Terellia colon) with large ovipositor on a host plant Greater knapweed (Centaurea scabiosa) flower bud. Wiltshire, UK, June.

Paul Harcourt Davies / Galls forming on Holm oak (Quercus coccifera) Italy

Ross Hoddinott / Spangle galls on oak leaf caused by Spangle gall wasp {Neuroterus quercusbaccarum}, Cornwall, UK. October.

Wild Wonders of Europe / Sá / Coastline with Rubha Nan Gall Lighthouse at sunset, Mull, Scotland, June 2009

Wild Wonders of Europe / Sá / Rubha Nan Gall Lighthouse at sunset, Mull, Scotland, June 2009

Mike Salisbury / David Attenborough talks to camera about gall wasps for BBC TV production of 'Life in the Undergrowth', while Producer Stephen Dunleavy looks on, Hungary, January 1980 Copyright József L. Szentpéte...

Juan Carlos Munoz / Gall oak woodland (Quercus faquinea) with flowering Gorse, Parque Natural de Grazalema, Serrania de Cadiz, Spain, December 2008

Andy Sands / Oak marble gall wasp (Andricus kollari) on oak bud, early spring, Captive, UK

Andy Sands / Oak marble gall wasp (Andricus kollari) on oak bud, early spring, Captive, UK

Andy Sands / Oak marble gall wasp (Andricus kollari) about to take flight from oak bud, early spring, Captive, UK

Dave Bevan / Wlanut gall mite (Eriophyidae spp.) showing damage to upper surface of Walnut leaves (Juglans sp), UK

Mark Moffett / Millipede (Narceus americanus) with galls and mold inside acorn, Massachusetts

Ross Hoddinott / Cherry Gall of Pincushion gall wasp {Diplolepis rosae} on Oak leaf {Quercus robur} underside, Dartmoor NP, Devon, UK.

Paul Hobson / Oak "apples" on Oak tree leaf (Quercus sp) caused by larva of gall wasp, UK

Jason Smalley / Common spangle galls on oak leaves caused by Spangle gall wasp {Neuroterus quercusbaccarum} Lancashire, UK

Doug Wechsler / Round Goldenrod gall caused by larva of Goldenrod gall fly {Eurosta solidagnis} Pennsylvania, USA

Duncan Mcewan / Smooth pea galls on Dog rose leaves {Rosa canina} caused by gall wasp {Diploepis eglanteriae} UK

Duncan Mcewan / Pineapple gall / pseudocone on Spruce tree {Picea sp} caused by Gall aphid, Scotland, UK

Chris O'Reilly / Silk button and Common spangle galls of Gall wasps {Neuroterus spp} on oak leaf. UK

Chris O'Reilly / Silk button spangle galls (Neuroterus numismalis) on oak leaf, UK

Jason Smalley / Common spangle galls on oak caused by wasp (Neuroterus quercusbaccarum) Lancashire, UK

Chris O'Reilly / Cherry galls on Oak sapling caused through parasitism by {Cynips quercusfolii} gall wasp, Mixed woodland, Spring, Derbyshire, UK

Chris O'Reilly / Cherry galls on oak sapling caused through parasitism by {Cynips quercusfolii} gall wasp, Mixed woodland, Spring, Derbyshire, UK

Duncan Mcewan / Spangle galls, early development on Oak leaf caused by Spangle gall wasp {Neuroterus quercusbaccarum} UK

Chris O'Reilly / Artichoke gall {Andricus fecundator} on Oak tree, Derbyshire, UK

Chris O'Reilly / Artichoke gall {Andricus fecundator} on Oak tree, Derbyshire, UK

Chris O'Reilly / Robin's pincushion gall {Diplolepis rosae} on Dog rose {Rosa canina} Derbyshire, UK

Philippe Clement / Cherry gall on oak leaf caused by Gall wasp {Cynips quercusfolii} Belgium

Kim Taylor / Oak marble gall section showing larva of gall wasp {Andricus kollari} UK.

Kim Taylor / Oak marble gall section showing larva of gall wasp {Andricus kollari} UK.

Adrian Davies / Pin cushion gall caused by Gall wasp {Diplolepis rosae} on wild dog rose, UK.

Kim Taylor / Oak Marble Gall Wasp (Andricus kollari) cleans its wings after emerging from gall

Kim Taylor / Larva of Oak Marble Gall wasp (Andricus kollari) in gall, cross-section, UK.

Brian Lightfoot / Cherry Gall on Oak leaf caused by gall wasp, Cynips quercusfolii, Scotland

Duncan Mcewan / Cherry Gall cut away to show Gall wasp larva (Cynips quercusfolii) inside. On oak tree leaf.

Duncan Mcewan / Cherry gall cut away to see wasp larvae (Cynips quercusfolii). Scotland, UK, Europe

Duncan Mcewan / Cherry galls developing on young oak leaf caused by gall wasp (Cynips quercusfolii). Scotland, UK, Europe

Chris O'Reilly / Gall on oak acorn made by larva of Knopper gall wasp, UK

Duncan Mcewan / Common spangle galls on oak leaf caused by Wasp (Neuroterus quercusbaccarum). Scotland, UK, Europe

Philippe Clement / Oak galls of {Cynips divisa} on oak leaf Belgium

Duncan Mcewan / Currant galls on oak male flowers caused by gall wasp (Neurotus quercus-baccarum), June. UK, Europe

PREMAPHOTOS / Wasp (Eurytoma brunniventris) ovipositing / laying egg into Oak gall (Diplolepis divisa). When the egg hatches it parasitises the larva inside the gall

Anup Shah / Patas monkey {Erythrocebus patas} reaching up to feed on ant galls on Whistling thorn acacia tree, Kenya

Mark Moffett / Oriental Chestnut Gall Wasp (Dryocosmus kuriphilus) emerging from gall in acorn, Massachusetts

Mark Moffett / Creosote Bush (Larrea tridentata) with creosote gall caused by fly

Ross Hoddinott / Oak spangle galls from gall wasp {Neuroterus quercus baccarum} on oak leaf, UK

Duncan Mcewan / Bedegaur gall (Robin's pin cushion gall) on Dog rose, Gall wasp (Diplolentis rosea), August. UK, Europe

Duncan Mcewan / Artichoke galls on oak buds caused by gall wasp (Andricus fecundator), September. UK, Europe

Niall Benvie / Galls on alder leaf. Angus, Scotland, UK, Europe

Rick Tomlinson / Monohull "Sill Beurre Le Gall", skippered by French sailor Roland Jourdain during the Europe 1 Star, 2000.^^^ The monohull finished 7th, crossing the Atlantic in 15d 13h 38m.

Rick Tomlinson / Monohull "Sill Beurre Le Gall", skippered by French sailor Roland Jourdain during the Europe 1 Star, 2000. ^^^ The monohull finished 7th, crossing the Atlantic in 15d 13h 38m.

Mark Moffett / Gall Midge (Cecidomyiidae) gathering pollen from Cocoa (Theobroma cacao) flower by sticking its head inside a ôpetal pouchö that contains both pollen and a sticky nectar reward, Panama

Robert Thompson / Oak galls made by the Oak gall wasp (Cynops divisa) on fallen oak leaves, Clare Glen, County Armagh, Northern Ireland, UK

Premaphotos / Weevil (Curculio / Balanobius salicivorus) female biting an egg-laying hole in a very young specimen of a bean gall on willow, UK