Black Arches
Animals, Moths

Scientific name: Lymantria monacha

Late July to August. Local to southern parts of England, East Anglia and west Wales. A distinctive moth with black jagged lines and markings decorating the creamy-white wings.

The adults fly at night and are attracted to light, especially the males. They can sometimes be found resting on tree trunks or posts during the day. The caterpillars can be found from April to June after they have overwintered as eggs.

England and Wales
Specific name:
Lymantria monacha
Woodland and parks with mature oaks
Wingspan Range – 36-56mm
Medium Sized
Well distributed in the southern section of England

Size and Family

  • Family – Tussock moths (Lymantriidae)
  • Medium Sized
  • Wingspan Range – 36-56mm

Conservation status

  • UK BAP: Not listed
  • Local (only found in some areas)

Caterpillar Food Plants

Mainly Pedunculate Oak (Quercus Robur) and Sessile Oak (Quercus petraea) but also other trees including Midland Hawthorn (Crataegus laevigata), birches and elms.


Woodland and parks with mature oaks