IdentificationAdult — 3/16"–1/4" long. Elongate oval. One small patch of white on each wing case, otherwise red–brown to black. Larva — 1/4" long. Long orange tufts of hair on the last abdominal segment. Larvae have a banded appearance. Pupa — formed in the last larval skin.
DescriptionA common inhabitant of birds nests. Adults feed outdoors often on Spiraea plants. Larvae attack furs, skins, woollens, etc. and stored grain. Mating takes place outdoors after which they fly indoors to lay eggs. Normally one generation per year but development may extend to three years.