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Sticker of Wheat weevil
Bug card No. 1447 of 1,500

Wheat weevil

Sitophilus granarius
Eats: PlantsBeetlesHouses and farms6 legs

The wheat weevil is a tiny reddish brown beetle with a long snout, like a little elephant trunk. It lives in stores of grain, like wheat, oats and rice. Its babies grow up hidden inside a single grain.

Lives in
Grain stores in many parts of the world
Length
3 to 5 mm (0.12 to 0.2 in)
Top speed
about 0.09 km/h (0.06 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. It does not bite or sting, but it can spoil a lot of stored grain.
What does it eat?
It eats cereal grains such as wheat, oats, rye, barley, rice and corn. The larva eats a grain from the inside.
For real!Photo of Wheat weevil
Picture by Desmond W. Helmore. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Wheat weevil about 5 mm long (0.2 in)A grain of rice about 6 mm (0.24 in)
small enough to sit on your fingernailcould run across a dinner table in 40 seconds

How big is Wheat weevil compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

It cannot fly, even though it is a beetle.

2

The mother chews a hole in a grain, lays one egg inside and seals the hole shut.

3

It is never found in the wild, only where people keep grain.

4

When it is scared, it pulls in its legs and plays dead.

5

One pair of weevils can have up to 6,000 young in a year.

you asked

Most asked questions about Wheat weevil

?How do wheat weevils get into food?

They live in stored grain. The babies grow inside the grains, so they are hard to spot.

?Are wheat weevils harmful?

They do not hurt people, but they eat stored grain and can spoil a whole store of it.

?How big is a wheat weevil?

It is only about 3 to 5 millimetres long.

For bug experts

Scientific name
Sitophilus granarius
Group
Beetles
Family
Curculionidae
Classification
Insecta > Coleoptera > Curculionidae
Lives on
Europe, Asia, Africa, North America, South America, Australia and Oceania
Also known as
Grain weevil, Granary weevil

Where the facts come from

  1. Wheat weevil (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
  2. Picture by Desmond W. Helmore. CC BY 4.0, Wikimedia Commons. The round sticker of this bug is cut from the same picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at hello@bugwiki.app and we will fix it.

More from the same group: Beetles

Also at home here: Houses and farms