
Community identification
Indian meal moth (late-stage larva/pupa or debris)
Plodia interpunctella
- Order & Family
- Lepidoptera: Pyralidae
- Size
- Larvae grow to approximately 10–12 mm; adults have a wingspan of 16–20 mm.
Natural Habitat
Worldwide in human structures, specifically pantries, kitchens, and food processing facilities where dried goods are stored.
Diet & Feeding
Stored grain products, including flour, cereal, cornmeal, crackers, chocolate, nuts, dried fruit, and birdseed.
Behavior Patterns
Larvae spin silk webbing over food sources to feed and eventually crawl away from the food source to pupate in cracks or crevices. Adults are nocturnal and fly in an irregular, zigzag pattern.
Risks & Benefits
They are major pests of stored food products. While they do not carry diseases or bite, they contaminate food with silk webbing, frass (feces), and cast skins, rendering the food unfit for human consumption.