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Peppered Moth - Biston betularia. Wingspan 35-50mm. A rather long-winged moth that occurs as two main colour forms. Both are well-camouflaged when resting on appropriate tree bark backgrounds. Adult of typical forms have either sooty-black wings or whitish wings peppered with dark spots; intermediate form also occurs. Flies May-August. Larva feeds on a range of deciduous trees and shrubs. Widespread and common.