Read here the fascinating story of how the Peppered Moth actually evolved a dark form to survive predation in the increasingly grimy environment of the Industrial North of England
http://www.mothscount.org/text/63/pe...selection.html
(But please note that the moth shown at the top right of this feature is
not a Peppered Moth but a Magpie Moth
)
Below you can see the original Peppered Moth imago alongside its evolved melanistic form. Many other previously light-coloured moth species evolved these dark forms as acid rain steadily ate away the algae on trees, rendering their camouflage ineffective
