Nigel Cattlin / Vapourer (Orgyia antiqua) moth caterpillar on Apple (Malus domestica) leaf. England, UK.

Nigel Cattlin / Vapourer moth (Orgyia antiqua) wingless female, a minor pest of Apple (Malus domestica). England, UK.

Lorraine Bennery / Common vapourer moth caterpillar (Orgyia antiqua) on ground,, Seine et Marne, France, July.

Stephen Dalton / Tussock moth larva (Orgyia antiqua) Sussex, England, UK, July.

Ingo Arndt / Common vapourer moth caterpillar with protective spines / hairs {Orgyia antiqua} Germany

Ingo Arndt / Common vapourer moth caterpillar with protective spines / hairs {Orgyia antiqua} Germany

Ole Jorgen Liodden / Marsh helleborine (Epipactis palustris) with Arctiid caterpillar (Arctidae) Hole, Norway, July.

Ole Jorgen Liodden / Marsh helleborine (Epipactis palustris) with Arctiid caterpillar (Arctidae) Hole, Norway, July.

Ole Jorgen Liodden / Marsh helleborine (Epipactis palustris) with Arctiid caterpillar (Arctidae) Hole, Norway, July.

Alex Hyde / Common Vapourer Moth caterpillar (Orgyia antiqua) with uricating hairs, on white background in mobile field studio. Nordtirol, Tirol, Austrian Alps, Austria. August.

Alex Hyde / Common Vapourer Moth (Orgyia antiqua) male showing feather-like antennae that it uses to find the flightless female. Photographed in mobile field studio on a white background. The National Forest, Lei...

Jussi Murtosaari / Rusty Tussock Moth (Orgyia antiqua) adult female (wingless) laying eggs on her empty cocoon, southwest Finland, September.

Jussi Murtosaari / Rusty Tussock Moth (Orgyia antiqua) caterpillar, southwest Finland, July.

Paul Hobson / Vapourer moth (Orgyia antiqua) male on birch, Sheffield, England, UK, September.

Adrian Davies / Vapourer Moth (Orgyia antiqua) cocoon, with eggs laid on outside. Surrey, April.

Alex Hyde / Common Vapourer Moth (Orgyia antiqua) male showing feather-like antennae that it uses to find the flightless female, Peak District National Park, Derbyshire, UK. July.

Alex Hyde / Common Vapourer Moth (Orgyia antiqua) eggs hatching, with newly emerged caterpillars seen eating their egg cases. Derbyshire, UK, April

Alex Hyde / Common Vapourer Moth (Orgyia antiqua) eggs hatching, with newly emerged caterpillars seen eating their egg cases. Derbyshire, UK, April

Alex Hyde / Caterpillar of the Common Vapourer Moth (Orgyia antiqua), showing defensive urticating hairs that deter predators. Peak District National Park, Derbyshire, UK. April.

Alex Hyde / Female Common Vapourer Moth (Orgyia antiqua) laying eggs on surface of coccoon from which it has emerged. Derbyshire, UK, July.

Alex Hyde / Female Common Vapourer Moth (Orgyia antiqua) laying eggs on surface of coccoon from which it has emerged. Derbyshire, UK, July.

Alex Hyde / Common Vapourer Moth (Orgyia antiqua) eggs on surface of coccoon. Derbyshire, UK, July.

Kim Taylor / Vapourer Moth (Orgyia antiqua) spent female clinging to her egg-covered cocoon. Surrey, UK, August.

Alex Hyde / Common vapourer moth (Orgyia antiqua) eggs on surface of coccoon.

Robert Thompson / Common vapourer moth (Orgyia antiqua) resting on leaf, Connamara, County Galway, Republic of Ireland, September

Robert Thompson / Caterpillar larva of the Common vapourer moth (Orgyia antiqua) Montiaghs Moss NNR, County Antrim, Northern Ireland, UK

PREMAPHOTOS / Caterpillar larva of Common vapourer moth (Orgyia antiqua) UK

Duncan Mcewan / Caterpillar larva of the Common vapourer moth (Orgyia antiqua) Scotland, UK

David Kjaer / Caterpillar larva of the Common vapourer moth (Orgyia antiqua) UK

Rupert Barrington / Eggs of the Common vapourer moth (Orgyia antiqua) UK

Simon Colmer / Common vapourer moth caterpillar (Orgyia antiqua) on birch leaf, UK

Ingo Arndt / Rusty Tussock Moth (Orgyia antiqua) or Vapourer caterpillar, on leaf

Ingo Arndt / Rusty Tussock Moth (Orgyia antiqua) or Vapourer caterpillar, on leaf

Nigel Cattlin / Vapourer / rusty tussock moth (Orgyia antiqua) caterpillar on a damaged rose leaf, Berkshire, June

Robert Thompson / Vapourer moth (Orgyia antiqua) caterpillar on a leaf, Montiaghs Moss National Nature Reserve, County Antrim, Northern Ireland. July.

Robin Chittenden / Vapourer moth caterpillar (Orgyia antiqua) resting leaf, Norfolk, UK. June.

Chris Mattison / Vapourer moth (Orgyia antiqua) male viewed from above. Females of this species are wingless, Catbrook, Monmouthshire, Wales, UK.

Chris Mattison / Vapourer moth (Orgyia antiqua) male resting on leaf. Females of this species are wingless, Catbrook, Monmouthshire, Wales, UK.

Chris Mattison / Vapourer moth (Orgyia antiqua), newly-emerged wingless female clinging to cocoon, Catbrook, Monmouthshire, Wales, UK.

Chris Mattison / Vapourer moth (Orgyia antiqua) eggs attached to female's vacated cocoon, Monmouthshire, Wales, UK.

Chris Mattison / Vapourer moth (Orgyia antiqua), newly-emerged wingless female clinging to cocoon on which she has laid clutch of eggs, Monmouthshire, Wales, UK.