Alex Hyde / Group of Tissue moths (Triphosa dubitata) hibernating in a limestone cave. Peak District National Park, Derbyshire, UK. November.

Thomas Marent / Geometer Moth (Cathydata batina), Tatama National Park, Colombia

Paul Bertner / Looper Moth (Geometridae) caterpillar, Bukit Barisan Selatan National Park, Sumatra, Indonesia

Ingo Arndt / Looper moth caterpillar mimics twig {Geometridae} Guanacaste, Costa Rica

Lorraine Bennery / Geometrid moth caterpillar (Geometridae sp.) moving along a twig in classic pose, Corbieres, France, May.

David Kjaer / Duke of Burgundy butterfly (Hamearis lucina), Wiltshire, UK, June.

Jussi Murtosaari / Grey Birch butterfly (Aethalura punctulata) resting on tree trunk in woodland habitat, Pirkanmaa, Finland, May.

Alex Hyde / Northern Spinach moth (Eulithis populata), photographed on a white background, Aosta Valley, Monte Rosa Massif, Pennine Alps, Italy. July.

Piotr Naskrecki / Looper Moth (Geometridae) caterpillar with aposematic coloration, Atewa Range, Ghana

Wild Wonders of Europe / Zupanc / Geometrid moth (Geometridae sp) caterpillar moving along twig, Triglav National Park, Slovenia, June 2009

Rolf Nussbaumer / Gray moth camouflaged on tree bark {Geometridae} Texas, USA.

Chris Mattison / Scalloped hazel moth (Odontopera bidentata), Wye Valley, Monmouthshire, Wales, UK. May.