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.

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.