1. Home
  2. Insect Identification
  3. Select an Insect
  4. Red Flour Beetle

Red Flour Beetle
(Tribolium castaneum)

Description: Reddish-brown body 1/8” long; last three segments of antennae as distinct club.

Life Cycle: Egg to adult within 30 days; adults can live up to 18 months

Feeding Habits: Generally classified as a scavenger, immature stages feed on broken or damaged grains. A common pest in mills and warehouses that store milled/bagged grain products.

Signs of Infestation: Presence of adult beetles cause food to have pungent odor, foul taste and potentially a pink coloration.

Control Tips: Priority is cleaning; empty bins, and equipment should be free of grain debris. After cleaning, treat bins with Diacon® IGR PLUS. Treat received grain with Diacon® IGR or Diacon® IGR PLUS; aerate grain during warm periods of storage to help control moisture and temperature; monitor grain throughout storage period.

Application Tips: When treating flowing grain on belts or at transitions, 2 or more nozzles are recommended; during auger or conveyor cup application, fewer nozzles may be used; position nozzles for full coverage of grain stream; avoid spraying onto sides of auger boots. Calibrate protectant flow rate and check often to help ensure proper application. Use automated switches to turn chemical pumps on when there is grain in the system and turn off when no grain is present.

A overhead view of a Red Flour Beetle. A Red Flour Beetle against a ruler, it measures 1/8th of an inch.

Recommended Products

Diacon IGR Family Product Shot

Diacon® IGR

Diacon® IGR is approved virtually everywhere stored product insects are a problem. Diacon® IGR interrupts the life cycle, providing long-term control.

Centynal EC Insecticide

This stored grain insecticide can be used in empty grain bins/silos and on grain to knockdown weevils and other pests to prevent bugs in grain.
Diacon IGR Plus Family Product Shot

Diacon® IGR PLUS

This stored grain insect control contains an adulticide and insect growth regulator for quality grain protection to help get rid of weevils and other pests.

Diacon®-D IGR

Diacon®-D IGR is a insect growth regulator, ready-to-use, dry formulation option for controlling insects at on-farm and off-premise storage sites.
Pyronyl Crop Spray Family Product Shot

Pyronyl Crop Spray

Pyronyl™ Crop Spray features a high ratio of active ingredients to synergist for the flushing and rapid knockdown of multiple stored product insects.