Geometridae : Larentiinae
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Photo © Garry Barlow,  Bacton Wood, Norfolk. 141017

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Immature stages

Similar Norfolk Species
Grey Pine Carpet
Thera obeliscata
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Spruce Carpet
Thera britannica

(Turner H J, 1925) 1769 / 70.079

Norfolk status
Spruce plantations other coniferous woodland, heathland, grassland and gardens.
Can be hard to distinguish from Grey Pine Carpet, but is usually bolder and greyer in appearance, appearing 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 2023.
Additional Stats

< Pine Carpet  |  Grey Pine Carpet >

Determination
Grey Pine Carpet - Spruce Carpet Comparison - Taken from Conifer Moths of the British Isles by J Clifton, J Wheeler 2012
Grey Pine Carpet - Spruce Carpet comparison - Jon Clifton
List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10kGeneral Area
21/11/2023128TF63Dersingham
21/11/2023127TG04Glandford
16/11/2023127TG10Cringleford (UEA)
10/11/2023127TG20Stoke Holy Cross
04/11/2023128TF63Heacham
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Spruce Carpet
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Forewing: 13-17mm
Flight: Two Generations
May-July, Sept-Nov.
Foodplant:   Norway Spruce, Sitka Spruce, Western Hemlock
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 2
 Immature Adult

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Underlying maps using Digital Map Data © NOLA™ 2024. © Lepidoptera UK - Jim Wheeler - Norfolk Moths 2007 - 2024. Data © NOLA™ 2024
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