Ingo Arndt / Bark beetle (Scolytinae) galleries in dead spruce tree (Picea abies), Bayerischer Wald / Bavarian Forest National Park, Germany., June.

Oliver Hellowell / Oliver with Ken Jenkins at their joint exhibition, T5 Gallery Heathrow Airport, July 2018

Oliver Hellowell / Photographers Oliver Hellowell and Ken Jenkins (Tennessee based photographer) being filmed at their joint exhibition at the T5 Gallery, Heathrow Airport, England, UK. July.

Andres M. Dominguez / Beetle (Scolytus sp) galleries in Field elm (Ulmus minor). Sierra de Grazalema Natural Park, southern Spain.

Staffan Widstrand / Ancient rock art painting galleries, Aiduma Island, near the Mainland New Guinea, Western Papua, Indonesian New Guinea

Staffan Widstrand / Ancient rock art painting galleries, Aiduma Island, near the Mainland New Guinea, Western Papua, Indonesian New Guinea

Ingo Arndt / Bark beetle (Scolytinae) 'galleries' or tracks in the wood of dead spruce tree, Yellowstone National Park, USA.

Ingo Arndt / Bark beetle (Scolytinae) 'galleries' or tracks in the wood of dead spruce tree, Yellowstone National Park, USA.

Onne van der Wal / Hamilton Island Art Gallery, Whitsundays, Queensland, Australia, November 2012.

David Woodfall / Bee keeper with hives on Manchester Art Gallery roof, England, UK, June 2014.

Michele Westmorland / View from Las Penas galleries, Santa Ana Hill, Guayaquil, Ecuador

Michele Westmorland / View from Las Penas galleries, Santa Ana Hill, Guayaquil, Ecuador, August 2010.

Michele Westmorland / Numbered steps in Las Penas galleries, with cafes and shops. Guayaquil, Ecuador

Michele Westmorland / View from Las Penas galleries, Santa Ana Hill, Guayaquil, Ecuador, August 2010.

Michele Westmorland / Steps and Las Penas galleries, with cafes and shops Guayaquil, Ecuador, August 2010.

Wild Wonders of Europe / Unterthiner / Close up of tree trunk with fallen bark showing insect galleries, Bialowieza NP, Poland, February 2009

Mark Moffett / Bark Beetle (Dendroctonus pseudotsugae) larvae with radiating galleries in Douglas Fir (Pseudotsuga menziesii) tree, Flat Creek, University of Idaho Forest, Idaho

Mark Moffett / Bark Beetle (Dendroctonus pseudotsugae) larvae with radiating galleries in Douglas Fir (Pseudotsuga menziesii) tree, University of Idaho Forest, Idaho

Mark Moffett / Bark Beetle (Dendroctonus pseudotsugae) larvae with radiating galleries in Douglas Fir (Pseudotsuga menziesii) tree, Flat Creek, University of Idaho Forest, Idaho

Adrian Davies / Dutch elm disease. Galleries caused by beetle {Scolytus sp} on inside of Elm bark. UK

Onne van der Wal / Photographer Onne van der Wal's gallery on Bannister's Wharf, downtown Newport, Rhode Island, USA.

Onne van der Wal / Onne van der Wal gallery on Bannisters Wharf, Newport, Rhode Island, USA.

Premaphotos / Harlequin beetle male (Acrocinus longimanus) above one of the characteristic oval larval galleries, in a dead tree in rainforest, Trinidad

GEORGETTE DOUWMA / Elm bark beetle {Scolytus sp} galleries in Elm bark {Ulmus propinqua} UK galleries produced

Will Watson / Saproxylic beetle galleries on Oak (Quercus sp), Sturts Nature Reserve SSSI, Herefordshire, England, August.

Will Watson / Galleries left by Elm bark (Scolytus sp.) beetle, on dead Wych elm (Ulmus glabra) in woodland, Herefordshire, England, UK. February.

Adrian Davies / Dutch elm disease (Ophiostoma novo-ulmi) infected Elm (Ulmus sp), covered in European elm bark beetle (Scolytus sp) galleries / tunnels underneath bark. Sussex, England, UK.

Adrian Davies / Ash bark beetle (Hylesinus crenatus) galleries / tunnels under bark of Ash (Fraxinus excelsior) tree killed by Ash dieback (Hymenoscyphus fraxineus). Surrey, England, UK.

Nigel Cattlin / Damage to horse chestnut (Aesculus hippocastanum) leaf caused by leaf-miner (Cameraria ohridella) larvae, Berkshire, September