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Round-winged Muslin
Thumatha senex (Hübner, 1808)
Erebidae: Arctiinae
2035 / 72.037
Photo © Raymond A Watson,  Hollesley, Suffolk.

Similar Suffolk Species
Muslin Footman
Nudaria mundana
Forewing: 10-11mm.
Flight: One generation June-Aug.
Foodplant:   Lichens and mosses.
Nat 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 Status: Locally common, particularly widespread in coastal wetlands.

Identification: Compare with Muslin Footman.

Habitat: Marshes, fens, damp grassland.

Recorded in 45 (78%) of 58 10k Squares.
First Recorded in 1902.
Last Recorded in 2019.

Latest 5 Records
Date#VC10k Area
24/08/2019125TM44 - Orford Ness
03/08/2019126TL77 - Mildenhall
02/08/2019+25TM34 - Hollesley/Rendlesham Forest
01/08/2019125TM24 - Woodbridge/Martlesham
31/07/2019126TM05 - Stowmarket/Needham Market
Further info: Thumatha senex
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