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Round-winged Muslin
Thumatha senex (Hübner, 1808)
Erebidae: Arctiinae
2035 / 72.037
Photo © Lee Gregory,  26/07/2021 - Brandon Fen

Similar Suffolk 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

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 2023.

Latest 5 Records
Date#VC10k Area
23/08/2023125TM24 - Woodbridge/Martlesham
11/08/2023126TL77 - Mildenhall
11/08/2023125TM49 - Somerleyton/Beccles
04/08/2023125TM38 - Bungay/Rumburgh
28/07/2023125TM25 - Wickham Market/Otley
Further info: Thumatha senex
 
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