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Round-winged Muslin
Thumatha senex (Hübner, 1808)
Erebidae: Arctiinae
2035 / 72.037
Photo © Annette Shelford,  07/07/2020 - The Boathouse, Shingle Street

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Similar Species
Muslin Footman
Nudaria mundana
Forewing: 10-11mm.
Flight: One generation June-Aug.
Foodplant:   Lichens and mosses.
Red List: Least Concern (LC)
GB Status: Common
Former Status: Local
Verification Grade:  Adult: 2
Status
Morley's Final Catalogue: Very locally common in broad marshes. Needham, Stowmarket, Leiston, Beccles, Lowestoft: ante 1890. Henham in 1936 (Gd) and Ipswich, very rare at light (Pyett, Mly); numerous at Hemley in 1902-3 (Wlr); and plentiful at dusk at Beccles (Trans.ii., 292). Dunwich salt-marshes in 1937 (Hawley).

Recent Suffolk Status: Locally common, particularly widespread in coastal wetlands.

Life history: Single-brooded in the summer.

Identification: Compare with Muslin Footman.

Habitat: Marshes, fens, damp grassland.

Recorded in 46 (79%) of 58 10k Squares.
First Recorded in 1902.
Last Recorded in 2024.
Additional Stats

Latest 10 Records
Date#VC10kArea
28/08/2024125TM24Woodbridge/Martlesham
12/08/2024125TM13Brantham/Holbrook
09/08/2024525TM49Somerleyton/Beccles
02/08/2024126TM05Stowmarket/Needham Market
02/08/2024125TM24Woodbridge/Martlesham
02/08/2024126TL84Sudbury/Glemsford
01/08/20242525TM24Woodbridge/Martlesham
31/07/2024325TM24Woodbridge/Martlesham
30/07/2024125TM34Hollesley/Rendlesham Forest
29/07/2024125TM34Hollesley/Rendlesham Forest
Further info: Thumatha senex
 
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