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Fox Moth
Macrothylacia rubi (Linnaeus, 1758)
Lasiocampidae: Lasiocampinae
1638 / 66.008
Photo © Jim Swalwell,  01/06/2019 - Brecks

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Similar Species: None
Forewing: M 22-26mm. F 26-31mm.
Flight: One generation. May-June.
Foodplant:   Heathers, Bilberry, Creeping Willow. Brambles.
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1
Status
Local, mainly in the Brecks.
Heathland, coastal and other grasslands, fen, open woodland, scrub.
The males fly in the afternoon, females tend to fly only at night.

The distinctive black/brown and tan very hairy caterpillars often occur in great profusion in the Autumn. Early instar larvae have distinct yellow rings.

Recorded in 32 (43%) of 74 10k Squares.
First Recorded in 1834.
Last Recorded in 2025.
Additional Stats

Latest 10 Records
Date#VC10kArea
11/05/2025128TL69Stoke Ferry
01/05/2025128TL69Stoke Ferry
25/04/2025128TF62Pott Row / Sugar Fen
28/02/2025128TF62Dersingham Bog
08/11/2024+27TG42Winterton Dunes
06/10/2024+27TG42Winterton Dunes
06/10/2024+27TG42Winterton Dunes
28/09/2024+28TF62Knights Hill / Roydon Common
23/09/2024+28TF62Roydon Common
21/09/2024+28TF62Roydon Common
Further info: Macrothylacia rubi
 
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