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72.037 (BF2035)

Round-winged Muslin   

Thumatha senex
Adult: 2
Resident. Scarce.

Red List: Least Concern (LC). GB Status: Common.

Identification

Usually distinctive. Care required, potential confusion with Muslin Footman.

Recording Method.

Attracted to light.

Life cycle

One generation. Overwinters as a small larva. Larvae August to May. Pupates in a cocoon close to the ground.

Larval foodplants

Lichens, mosses and algae on marsh plants.

Habitat

Fens, damp grassland, wetter areas on moorland, marshes and coastal dunes.

History 

The first records came in July, 1981, from the Waterside Mains Rothamsted station at Keir, where it was recorded on six occasions. During 1987-92 at the Mabie Forest station, it was recorded a dozen times.

It then occurred thrice at Auchencairn, 2003, 2007 and 2009, with further sightings from Kirriereoch in 2007, Galloway Farm (VC74) in 2008, and in 2009 at Low Kirkbride Farm (VC73) and between Dunscore and Low Kilbride (VC72).

Waring et al. only mentions it for the lowlands between Forth and Clyde.

48 record(s) from 13 hectad(s) in D&G

VC74 VC73 VC72
Last recorded 2008 2022 2021

 UK Moths website - further information on species (with photos)

 East Scotland Butterfly Conservation website - national distribution maps and phenology

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