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Weevil


Summary: There are about 40,000 different species of weevils and beetles throughout the world. Weevils may possibly make up one the world's largest family of animals.

What in the world is a weevil? Farmers may refer to them as evil beetles because they are known to destroy crops. In fact, a weevil is a tiny pest that can cause much damage to grains you may have stored in pantries or cupboards like cereal and rice. There's nothing like opening a box of Cheerios only to find little bugs crawling around inside.

The weevil is so small that it rarely grows longer than a half-inch in length. Many species have a long snout for a mouth, and the snout can even be longer than the rest of its body. Weevils that feed on seeds, though, do not have snouts because the bugs don't need them to bore through food. A

RiceWeevil.jpg

weevil's snout may be curved and can contain tiny jaws. The shape of the snout helps the weevil to dig into plants or seeds. No need to worry about the jaws, though. They are harmless to humans and are only used to nibble through food. The weevil also has antennae that fold up near its snout.

Weevils lay their eggs most any place they find suitable, including plants and trees. And we're not talking one or two little weevils. The average amount of eggs weevils lay is about 100. Fortunately, though, not all of the eggs survive as they grow into larvae due to competition of limited amounts of food. Weevil larvae resemble tiny grubs. They are about 0.4 inches long and are usually white. The larvae do not have legs, causing them to squirm around for food.

After storing up enough food the larvae form little nests called chip cocoons. These are just like butterfly cocoons. The larvae rest in their cocoons for at least a month and emerge as adult weevils. It's amazing how many stages a tiny insect goes through in such a short amount of time.

If you notice weevils indoors, they most likely have invaded the grains in your home. Look for weevils in food, popcorn, bean bags and even Native American corn you may have used as a decoration for Thanksgiving. Who'd have thought holiday decorations are susceptible to pest damage?

The most common pantry pest weevils are the rice weevil and the granary weevil. These insects are often brought into a home in packaged foods. They are also capable of entering from outside sources.

Weevils can do damage to food, but there are ways of saving your groceries. For example, you can boil grains like rice for at least 15 minutes. Or, you can store the grains in your freezer for three days. These techniques will help to kill off the weevils. However, the very thought of bugs crawling around in my food is enough for me to throw it out.

granaryweevil3degesch.jpg

So, thorough inspection is required of all grains, cereals and spices, whether the packages have been opened or not. You are looking for signs of damage to the grains or for the presence of the insect, itself. If you discover either, out goes the product. Bad infestations have the nasty habit of emptying a cupboard. Following the purge you must carefully vacuum all cracks and crevices where the foods were stored. Once everything is cleaned you may apply a light treatment of pesticides along the cracks and crevices of the cupboard shelves. I also recommend purchasing some tented glue traps to continue monitoring for new outbreaks. I strongly suggest being very careful with your initial inspection or you may find yourself repeating the process.

Grains are not the only things that weevils can infest. They can also be found in fruits, seeds and roots of plants. There is almost no limit to the types of plants weevils will invade. They can destroy plums, cotton, cherries, peaches, alfalfa, apples, grains and acorns. Adult weevils lay their eggs in these items. Their larvae emerge and feast on the host plants. This can cause a lot of damage to plants and flowers.

If you notice damage to your flower or vegetable garden and know that there are no rabbits nearby, weevils may be the culprits. You'll probably have to use a magnifying glass to identify them.

In order to eliminate weevils from your garden you may have to burn the infested plants. This will help salvage the remaining healthy plants before any larvae can get to them. Another option is to spray insecticide on the plants. Be sure to read the labels on any insecticides you use, as some are not suitable for use on vegetables meant for consumption.





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Comments

Sherri Ratliff
21 Sep 2009, 09:48
How do i eliminate pantry weevils. We've tried the Raid (weevil included as an insect it would eliminate). We've taken everything out of our pantry, cleaned with beach water and left bare....still I have these little weevil crawling around by kitchen floor, stove top and occasionally we've seen one or two in the back bedroom.

Any suggestions would be appreciated.
Sue Walton
17 Oct 2009, 14:34
How in the world do i get rid of weevils not in my pantry...but my bedroom..they are in the window seals..and some are flying around...I tried some outdoor pectcide,...it kills them but they still come back...I need help before they go all over the house....

Thank You
Sue....
Oct. 17,2009
LES JULYAN
06 Oct 2011, 22:56
how do i get rid of weevils in my cupboards where i have sugar, flour, cereal ,
i need help
thanking you
Ask the Exterminator
07 Oct 2011, 12:49
The weevils are coming from infested food in your pantry. Check every box, looking for dates of expiration. Even boxes that have never been opened can become infested if they are past their expiration. Check cereals, flour, cookies, crackers, grains, pasta and spices. Throw out everything that is infested.
Kristina
06 Dec 2011, 15:22
Hi, I had grain weevil or beetle which ever they call it in my kitchen. I tossed all my food except canned gravy and my apartment complex had an exterminator come in and spray. These bugs were only found on the kitchen floor. I never saw one in the cupboard. I did see one (on more than one occasion) in the drawer where I keep my forks, spoons, etc. After they sprayed there were only dead ones but now a week later, I saw another live one last night. I'm so nervous to have them back full force and the complex says they will not come back until a month after the initial spray. How can I get rid of them once and for all? The infested food is gone bc I threw out everything. What is the best spray for these bugs? Raid does not work on them. Why are they on the floor and not roaming the counter or cupboards if they are grain bugs?
Ask the Exterminator
12 Dec 2011, 22:02
If you tossed out all your food you should have resolved your issues. That is, unless you have food under your appliances. Some people never move their stove or refrigerator and you would be shocked to see all the food that collects after years of neglect. That food residue can easily support pantry pests.
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