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Latin name: Oryzaephilus surinamensis
The beetle is reddish brown.
It is 2.5 to 3 mm long.
Its body is elongated and flattened.
On each side of the thorax, you can see 6 similar saw toothed growths.
It is from these traits that it takes its name.
The larva looks like a worm, and measures less than 3mm. It is greyish white and has
a brown head.
During its life, a female can lay 300 eggs. They are deposited randomly
in the mass of food or in clusters in a cracked grain.
The eggs of the beetle hatch in 3 to 5 days after spawning and larvae begin
to move freely, feeding on what they find in their path.
In less than 40 days, the larvae molt 2 to 4 times.
Depending on its environment.the entire cycle lasts from 3 to 10 weeks.
When the larvae are 3-4 mm long, they build a cocoon that they cover with
grain fragments using a sticky secretion. They will transform
Adults will emerge a week later.
Temperature limits for complete development are between 17 and 37 ° C.
The sawtoothed grain beetle has spread worldwide. In Canada, it is
found mostly in milled grain products such as cereals, bread and macaroni,
and sometimes in grain silos.
It attacks foods such as nuts, sugar, spices, dried fruits and meats
and many other commodities.
It is found wherever there is dry food (food industries,
supermarkets and residences).
In the house, it’s found mostly in kitchens where it will infest cabinets
With its strong mouthparts, the beetle can perforate plastic and paper packaging
, and so infest products whose containers are not yet open.
Like all insects that infest food, examine all food
and the packages you are taking home, to make sure they are free from
Make sure of the freshness of food purchased.
Buy only small quantities of perishable cereal products, especially in summer.
Keep surplus food in hermetically sealed containers
to prevent the spreading of insects to other foods.
When insects are present, you must first determine the source of
infestation and remove any contaminated food.
It is important to consider all stored products, even if the containers
do not seem opened.
You must then clean the infested area thoroughly.
In some cases, treatment may be applied but should be administered
by specialists to make sure that all sources of infestation are treated.