Geometridae : Larentiinae
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Photo © Ben Sale,  Wallington Common, Hertfordshire (13/07/21)

Similar Herts & Middlesex Species
Garden Carpet
Xanthorhoe fluctuata
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Twin-spot Carpet
Mesotype didymata

(Linnaeus, 1758) 1809 / 70.131
=Perizoma didymata

General comments:
Very local resident.

Foster (1937) lists this species as 'Common in all districts' [of Hertfordshire], but we have noted a steep decline, with only 11 records from 2007 to 2020. This is in line with the national situation. It is a typical hedgerow species and may have several foodplants (low-growing herbaceous plants). A possible cause for decline is very possibly the poor management of hedgerows and the resultant diminishing floral diversity of these habitats.

Recorded in 23 (56%) of 41 10k Squares.
First Recorded in 1887.
Last Recorded in 2022.
Additional Stats

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List Species Records   [Show All Latest]
Latest 5 Records
Date#VC10k Area
17/06/2022120TL42 - Bishop's Stortford (N)
13/07/2021220TL23 - Letchworth / Baldock
13/07/2021120TL23 - Letchworth / Baldock
25/06/2018120TL21 - Welwyn Garden City
21/06/2017120TL42 - Bishop's Stortford (N)
Show Details | 1990 to 2023 | 2000 to 2023 | Graph Key
Express Record Twin-spot Carpet
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VC20 VC21 VC21 VC20
Click Map for Details
Forewing: 11-15mm.
Flight: One generation June-Aug.
Foodplant:   many plants
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 2
 Immature Adult   [Show Flight Weeks]
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