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Peppered Moth
Biston betularia (Linnaeus, 1758)
Geometridae: Ennominae
70.252/1931
Photo © Mike Gasson,  03/06/2014 - Stibbard

Similar Norfolk Species
Oak Beauty
Biston strataria
Forewing: 22-28mm.
Season: One generation May-Aug.
Foodplant:   many small plants, trees and shrubs.
Nat Status: Common
Verification Grade:  Adult: 1
Norfolk Status
Common in gardens and a wide variety of other habitats. The adults are seen from mid May to mid August, and are typically white with black 'peppered' markings.
Two darker forms are more common where the trunks of trees are blackened by pollution. This is a classic example of evolution in action and has been much studied.

f. carbonaria: Sooty black, frequent in industrial areas correlating with levels of industrial pollution.

f. insularia: Genetic intermediate form, not a result of mixed mating, again more frequent in polluted areas.

Recorded in 67 (97%) of 69 10k Squares.
First Recorded in 1834.
Last Recorded in 2019.

Latest 5 Records
Date#VC10k Area
16/06/2019127TG10 - Wymondham/Cringleford
15/06/2019128TF73 - Docking/Bircham
15/06/2019127TG10 - Wymondham/Cringleford
15/06/2019327TG23 - N.Walsham/Roughton
14/06/2019127TG11 - Drayton/Swannington
Further info: Biston betularia
 
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