4954 N. Shamrock Place, Tucson, AZ 85705

Casemaking Clothes Moth

Tinea pellionella

Casemaking Clothes Moth

Life Cycle

Complete metamorphosis
Females lay eggs one at a time or in clusters.  The eggs hatch within 4-10 days.  The destructive larva will feed on fabrics and use the excrements to form their pupation cases.  This will occur through a series of molts ranging from 5-45.  The adults will emerge from cases within 2 months typically but can take several years for this to occur. Once they have emerged, they will die shortly after they lay eggs, usually within a month.  Adults do not feed.


  • Diet: Larva feed on woolen and animal fibers. Will feed on old insects that have died in walls.
  • Activity: Mainly an interior pest staying away from well-lit areas.
  • Preferred Climate: Sensitive to severe cold and hot temperatures and dry climates. Prefer humidity at 75%.
  • Defense: Pupating larva blend into fabrics they are laying on, going undetected
  • Cautions: Larva will create holes in fabrics.
  • Home Invasion: Typically brought in on fabrics, rugs, old clothing.

Helpful Hints

  • Exposing fabrics to severe cold (72 hours) or heat (30 minutes) for lethal effect.
  • Thoroughly inspect fabric items before bringing into a home. Tightly seal stored fabrics.
  • Pheromone traps for adults can be utilized in severe infestations. Finding the source of the larva and removing and cleaning area is necessary for full control.

Interesting Facts

Larva can sometimes be found in air ducts feeding on pet hair, lint collected in this area.



Nesting Sites

Prefer dark closets, attics or other areas and tend to live in dark corners or in folds of fabric.