Photo © Mike Wall

Round-winged Muslin

Thumatha senex

Checklist Number
72.037 [B&F: 2035]

Verification
Record will normally be accepted but photo evidence may be required - check with CMR if not sure of identity

Classification

Family:Erebidae
Subfamily:Arctiinae
Genus:Thumatha
Species:senex
Authority:(Hübner, [1808])

Local in fens, bogs, moorland, damp grassland and marshes throughout much of England. In Hampshire and on the Isle of Wight there are scattered colonies in bogs and marshes in all three vice-counties, with occasionally wanderers elsewhere. Wingspan 20-22 mm. The most likely confusion species is Muslin Footman Nudaria mundana, which differs in having two rather poorly-defined zigzag fasciae running across the less-rounded forewing, and fewer spots than Round-winged Muslin. Larva feeds on various lichens and various mosses.

The abundance in each month is indicated as follows:

No records
Very occasional
Irregular
Uncommon
Off-peak, but not unusual
Off-peak, but not unusual
Main flight time
J F M A M J J A S O N D
Adult
Larval

Records by week (adult)

Records by week (larval)