Prev Flights Rec Search
Peppered Moth
Biston betularia (Linnaeus, 1758)
Geometridae: Ennominae
1931 / 70.252
Photo © Martin Hosier,  first time I have photographed both forms together

View all 39 photos >

Similar Norfolk Species
Oak Beauty
Biston strataria
Forewing: 22-28mm.
Flight: 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 (91%) of 74 10k Squares.
First Recorded in 1834.
Last Recorded in 2021.

Latest 5 Records
Date#VC10k Area
31/08/2021627TG33 - Bacton
17/08/2021127TG42 - Hickling/Horsey
15/08/2021127TG20 - Norwich
15/08/2021127TG23 - N.Walsham/Roughton
14/08/2021127TG11 - Drayton/Swannington
Further info: Biston betularia
UK Moths
Mothdissection UK
Suffolk Moths
Cambs Moths Norfolk Moths (Full)
Back Record Home
iMoths V11.0 HD © Jim Wheeler 2022