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

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

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

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

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.

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

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

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 / White spruce tree {Picea glauca} showing burl, a spherical woody growth caused by fungi, insects or bacteria, Denali NP, Alaska, USA

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.

Anup Shah / Patas monkey feeds on galls of Whistling acacia tree, Kenya 2002 {Erythrocebus patas}

Anup Shah / Patas monkey feeds on seeds of Whistling acacia tree, Kenya 2002 {Erythrocebus patas}

Anup Shah / Young Patas monkey feeds on galls of Whistling acacia tree, Kenya 2002 {Erythrocebus patas}

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

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 / Ant (Crematogaster sp) group let leaves be overgrown by galls

Ross Hoddinott / Close up of Galls on English oak tree leaf {Quercus robur} UK

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

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