The Moths of Suffolk
1797 Autumnal Moth, Epirrita autumnata, (Borkhausen, 1794)

National Status : Common

Local Status : Resident (SMP Status 3)

Distribution and abundance : Widespread at low density

Habitats : Open woodland and heathland

Flight Period : Single-brooded; October to November

Larval foodplants : Mainly birch, alder and heather

Morley's Final Catalogue : Not hitherto recorded distinctively from the last; but I have taken it at light at MS. and expect other Members will amply confirm this. - CM.

Wingspan details : Forewing 16-20mm, Wingspan 40-44mm

Identification

Confusion species
    AdultNovember Moth, Epirrita dilutata
Pale November Moth, Epirrita christyi
Small Autumnal Moth, Epirrita filigrammaria

Compare confusion species
    Adult

Click to view full size image
Ipswich, Suffolk (x.2004) © N Sherman

Flight chart
JFMAMJJASOND
100 11

Life history chart
JFMAMJJASOND
ova ova ova larva larva larva pupa pupa imago imago ova ova

Further Photographs

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Confirmed by examining the anal claspers. - Ipswich, Suffolk (23.x.2009) © Neil Sherman
Id confirmed by checking claspers - Ipswich, Suffolk (27.x.2015) © Neil Sherman
Id confirmed by checking claspers - Ipswich, Suffolk (6.xi.2015) © Neil Sherman