72.037 Round-winged Muslin Copyright Martin Evans
72.037 Round-winged Muslin and Muslin Footman Copyright Martin Evans
Distribution map Copyright Martin Evans
Life stages table Copyright Martin Evans 72.037 Round-winged Muslin Copyright Martin Evans

Erebidae

72.037 Round-winged Muslin Thumatha senex (Hübner, [1808])

Local

Similar species: Muslin Footman Nudaria mundana has the forewing spot at about a third and solid although often suffused cross-lines.

Forewing: 10 to 11mm

Habitats: Marshes, fens, bogs, marshy grassland, wet moorland, river-banks and dune-slacks.

Habits: The moth flies from sunset and at dawn. It comes to light.

Foodplant: The larva feeds on Dog Lichen Peltigera ssp. and many other lichens, and mosses including Silky Wall Feather-moss Homalothecium sericeum and Common Pincushion Dicranoweisia cirrata and algae on dead marsh plants. Pupation takes place in a cocoon on foliage near the ground.