The Rice weevil is a common pantry pest in Canada. They are most commonly found in elevators and bins of rice (which explains their name). They are capable of serious damage to large quantites fo stored grain products, like rice, wheat, barley, and raw cereals, which can have a tremendous financial impacy on food storage facilities and granaries. Rice weevils will attack and infest any grain products, as well as peas, pears, grapes and apples.
These flying beetles are small and slender with protruding snouts. They range 1/8- to 1/4-inch in length. They are reddish brown to black in colour, and commonly have 4 yellow, orange or red marks on thier wing covers.
Female rice weevils produce up to 400 eggs in their lifespan. They bore into grain kernals, and lay their eggs within. The larval stage is a legless grub that develops inside kernels of wheat or corn, or other whole grains or caked materials. The larve feeds on the kernal and chews their way out once they have developed into an adult rice weevil. Development from egg to adult can be as quick as 2-3 weeks in warmer temperatures, and longer in cooler environments.
Adult rice weevils can live for 6 to 8 months. Females generally live for just 4 to 5 months. Once mature, these pests may be found some distance from infested articles.
In addition to being excellent flyers, they are attacted to light. When they feel threatened or are disturbed, They will play dead by drawing their legs up near their bodies.
As with other pantry pests, all infested grains or foods should be discarded.
Learn more about how to get rid of pantry pests like rice weevils.
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