Brown house moth
Hofmannophila pseudospretella (Stainton)
Secondary pest: Grain feeder
- Adults are bronze-brown with darker flecks in the forewings.
- Hindwings are considerably broader than in Endrosis species.
- Adults range in size from 8 to 14 mm long, with a wingspan of 17 to 25 mm.
- Adult males are smaller than females.
- Larvae are white with a brown head capsule, reaching a length of 18 to 20 mm when mature.
- Carpet, cork, cereals, cereal products, meals, pulses, seeds, dried fruit, dried plants, fur, wool, feathers, leather, book bindings, paper
Signs of infestation
- Grain connected by silken material, although this is not unique to this species
- Silk and frass (excrement) are present
- Damage is not distinctive.
- Larvae produce silk webbing as they feed, although not conspicuous amounts.
- Irregular holes may be present in commodity attacked.
How to control
- Is found worldwide
- Is most abundant in temperate regions
- In Canada, it is found only in southern Ontario
- Is more often associated with houses and apartments
- Can digest wool as larvae and can eat through plastic and insulation materials
- Will live in bird nests in the wild and will feed on cadavers of birds
- Indicates aged residues and poor sanitation when present in large numbers
- Adults lay eggs in and around the food source.
- Larvae require high humidity for rapid development.
- Larvae canenter diapause (a dormant state that slows growth).
- Adults do not feed on commodity.
- Diapausing (dormant) larvae are resistant to desiccation and to a certain degree, insecticide application.
- Date modified: