Angoumois grain moth
Sitotroga cerealella (Olivier)

Classification

Primary pest; Grain feeder
Order: Lepidoptera
Family: Gelichiidae
Acronym: SCE

Description

  • Adults are smaller than other stored-product moths.
  • Adults have strongly curved labial palps and are pale grayish brown with a wingspan of 12 to 14 mm.
  • Fresh specimens have a single black dot on the centre of each front wing, approximately two-thirds from the wing base.

Similar species

  • None

Commodities affected

  • Wheat, barley, corn, rice, sorghum, millet

Damage

  • Larval feeding produces large cavities within infested grain.
  • Does not bind grain with silks as many moths do.
  • Infestations produce abundant heat and moisture that may encourage mould growth and attract secondary pests.
  • Adults do not feed on commodity.

Signs of infestation

  • As larvae develop within the grain kernel, damage is not readily apparent.
  • Heating of grain may be an indication of presence.
  • Presence of adults flying nearby is an indication of infestation.

How to control

Geographic range

  • Is found worldwide
  • In Canada, is found only in southern Ontario

Life history

  • Females lay up to 150 eggs, either singly or in groups, on the outside of grains.
  • Larvae burrow into the grain inside which they feed and remain until emergence as an adult.

Images

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Did you know?

The Angoumois grain moth is found worldwide in mild to warm temperate and tropical regions.