Jouan Rius / Black oak (Quercus velutina) in autumn, in Yosemite valley, Yosemite National Park, California, USA, December 2012.

Stephen Dalton / Oak tree {Quercus sp} seedling, UK

Chris Mattison / Oak beauty moth (Biston strataria) resting on lichen. Wye Valley, Monmouthshire, Wales. March, UK. Focus-stacked image.

David Kjaer / Great oak beauty moth (Hypomecis roboraria) on bracken, Wiltshire, England, UK, June.

Chris Mattison / Oak Beauty moth (Biston strataria) Monmouthshire, March.

Nick Turner / Oak tree (Quercus robur) in early spring at dawn, Cirencester, Gloucestershire, UK. April 2015.

Solvin Zankl / Copse snail (Arianta arbustorum) on oak tree branch in rain, Nationalpark Hohe Tauern / High Tauern National Park, Austria. May.

Jussi Murtosaari / Great oak beauty moth (Hypomecis roboraria) Lemland, Ahvenanmaa / Aland Islands Archipelago, Finland. July

Robert Thompson / Oak beauty moth (Biston strataria) The Argory Estate, (National Trust), Derrycaw, County Armagh, Northern Ireland, March 2013

Kim Taylor / Pale Oak Beauty Moth (Hypomecis / Serraca punctinalis) male camouflaged on bark. Surrey, UK, June.

Kim Taylor / Pale Oak Beauty Moth (Hypomecis / Serraca punctinalis) male against a white background. Surrey, UK, June.

Stephen Dalton / Great oak beauty moth (Hypomecis roboraria) camouflaged on bark, UK

Stephen Dalton / Great Oak Beauty moth (Hypomecis roboraria) resting on tree trunk, UK

Robert Thompson / Two Oak beauty moths {Biston strataria} camouflaged on bark, Argory Wood Derrycaw, Co. Armagh, Northern Ireland, March

Adrian Davies / Oak beauty moth {Biston strataria} camouflaged on bark, Essex, UK.

Robert Thompson / Two Oak beauty moths (Biston strataria) resting camouflaged on tree bark, Northern Ireland, UK, March

Robert Thompson / Oak beauty moth (Biston strataria) resting on tree bark, Argory Moss, County Armagh, Northern Ireland, UK, March

Stephen Dalton / Great oak beauty moth (Hypymecis roboraria) Sussex, England, UK, May.

Guy Edwardes / Oak-stump bonnet cap fungus (Mycena inclinata). New Forest National Park, England, UK. November