The confused flour beetle, Tribolium confusum (duVal), is a serious pest in flour mills, grocery stores and homes. As these beetles consume flour, it discolours and develops a rank odour.
While they prefer flour with a high moisture content, they will feed on other grains, peas, beans, shelled nuts, dried fruits, spices and drugs. The confused flour beetle originated from Africa and is a problematic pest in the US and Canada.
Adult confused flour beetles are 1/8” long and reddish brown in colour. They have gradually-clubbed antennae with a 4-segmented club (unlike the red flour beetle who has 3 segmented clubs on their antennae). They do not fly but have fully developed wings. Their wing covers are ridged, with some small punctures. These pests are attracted to light.
Confused flour beetles gain access to homes, stores and facilities through infested product. These beetles can and will crawl into packages that have the smallest of broken seals. Once they infest, they spread to nearby stored products.
The life cycle of the confused flour beetle is typically 7 weeks from egg to adult. Adult females can live for many months, and some for over a year.
If you come across these pests near or within your pantry, you like have an infestation.
Learn more about how to get rid of pantry pests.
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