Often found inside houses, this Asian species was introduced into Europe and beyond during the 1840's but can now be seen throughout the British Isles.

Adults vary greatly in size.

Flight Season

Flies throughout the year in multiple broods but most often encountered during the summer months. Outdoors the species cannot survive hard frosts.

Size and Family

  • Family – Oecophoridae
  • Small Sized
  • Wingspan Range – 15-26mm

Conservation Status

  • UK BAP: Not listed
  • Introduced Resident

Caterpillar Food Plants

The caterpillars, which can live for two years, feed on detritus and other material that accumulates indoors behind skirting boards and other similar places.


Often found in homes.


  • Countries – England, Wales, Scotland and Ireland
  • Widespread and common
Brown House-moth - Ben Sale

Brown House-moth

Brown House-moth - Patrick Clement

Brown House-moth

Brown House-moth - Lez Round

Brown House-moth

Brown House-moth - Sue Davies

Brown House-moth

Brown House-moth - Sue DaviesBrown House-moth - Sue Davies

Brown House-moth