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Spruce Carpet
Thera britannica (Turner H J, 1925)
Geometridae: Larentiinae
1769 / 70.079
Photo © Kevin Leighton,  24/05/2012 - Stow Bardolph

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Similar Norfolk Species
Grey Pine Carpet
Thera obeliscata
Forewing: 13-17mm
Flight: Two Generations
May-July, Sept-Nov.
Foodplant:   Norway Spruce, Sitka Spruce, Western Hemlock
Nat Status: Common
Verification Grade:  Adult: 2
Norfolk Status
Spruce plantations other coniferous woodland, heathland, grassland and gardens.
Can be hard to distinguish from Grey Pine Carpet, but is usually a bolder, better
marked insect and generally greyer in appearance than Grey Pine. Normally appears more variegated with the median band more fluted and normally edged narrowly with white.

Found throughout the British Isles, less common in Scotland and Ireland. Adult moths fly in two generations and come to light often in large numbers. The larvae feed on many coniferous trees, but mainly Norway Spruce, Sitka Spruce and Western Hemlock, but also Scots Pine, Douglas Fir and Lawson's Cypress.

Recorded in 61 (82%) of 74 10k Squares.
First Recorded in 1940.
Last Recorded in 2021.

Latest 5 Records
Date#VC10k Area
18/11/2021127TG32 - Stalham/Catfield
18/11/2021228TL99 - Thompson/Gt.Hockham
16/11/2021127TG10 - Wymondham/Cringleford
16/11/2021127TG32 - Stalham/Catfield
15/11/2021127TM18 - Diss
Further info: Thera britannica
UK Moths
Mothdissection UK
Suffolk Moths
Cambs Moths Norfolk Moths (Full)
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