Peppered moth  (Biston betularia)

Peppered moth caterpillar

© David Fox / www.osfimages.com

Peppered moth caterpillar

© David Fox / www.osfimages.com

Peppered moth caterpillar camouflaged as twig on plant

© Stephen Dalton / naturepl.com

Close up of peppered moth caterpillar

© Tom Murray

Light peppered moth

© Bob Fredrick / www.osfimages.com

Light peppered moth

© John Mason / www.ardea.com

Light peppered moth detail

© Henk.Wallays@pandora.be

Light peppered moth detail

© Søren Brøndum Christensen

Dark peppered moth

© www.osfimages.com

Well camouflaged dark peppered moth on tree bark

© David Fox / www.osfimages.com

Well camouflaged light peppered moth on lichen

© www.osfimages.com

Light and dark peppered moths

© John Mason / www.ardea.com

Light and dark peppered moths

© John Mason / www.ardea.com

Peppered moth; partial melanistic

© Bill Coster / www.nhpa.co.uk