PROBLEMS WITH GRAIN BEETLE
The grain beetle is a tropical insect but because of imports and exports it is now found all over the world. It is very established in Quebec. It will infest the pantry that contains food such as flour, pasta, bread and cereals in general. It will deposit a malodorous secretion that will make the grain or flour unfit for consumption.
DATA SHEET GRAIN BEETLE
The damage caused is mainly due to its invasion and consumption of foodstuffs. These insects are very fond of flour, cereals, nuts and dried fruits.
The grain beetle is a member of the large beetle family. It has an elongated and flattened body and measures between 2 and 3mm. Its antennas are club-shaped and its body is rusty brown. On each side of the thorax there are 6 spike-like outgrowths and 3 stripes can be seen lighter than the rest of the body. The serrated grain beetles are often confused with another insect called the flour beetle.
During her lifetime the female will lay 400 oval eggs. The eggs are found in food, in cracks in furniture or wooden floors. The larva will only feed on flour, but be aware that they will devour anything they can find. The larva is grayish white with brown spots and is slightly hairy on the back. It creates a cocoon with food fragments when it is ready to pupate.
HOW TO DETECT A SIGN OF THEIR PRESENCE
They love to hide in your cupboards, especially in the kitchen cupboards, among your food supplies. They have very strong jaws: they tear even the most resistant paper, cellophane, hard cardboard, plastic… They quickly invade all your food supplies and sneak in everywhere thanks to their small size and thin and frail body.
Its favorite foods are: flour, cereals, pasta, rice, bread, oatmeal, etc. In fact, her favorite food is anything made of wheat and cereals.
But that’s not all! He also eats all sweet foods like cookies, chocolate, dried fruits. It also loves the favorite food of your pets, such as dog or cat food, the seeds of your little parakeet.
The insect can mate over a period ranging from 2 to 5 months. The female lays an average of 375 eggs in her life. She lays them in holes, crevices or even directly in the food. After hatching, the eggs turn into larvae, then pupae. They are small and range in color from white to yellow.
The larva does not stay still. It is very active, its mutation to the adult stage depends on the oviposition period. It takes only 8 weeks on average for the larva to become an adult. Interestingly, under the effect of heat, a nymph can develop more quickly.
HOW TO PREVENT GRAIN BEETLES
Mice can squeeze through cracks that are barely the size of a dime, while rats can fit through a hole the size of a quarter. The first intervention is to eliminate easy entry points. Even small cracks in a worn doorway can be an entry point for mice.