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Sticker of Tule beetle
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Tule beetle

Tanystoma maculicolle

The tule beetle is a ground beetle from the west of the United States. In parts of California there are so many of them that people call it extremely common. Sometimes it even wanders into people's homes.

Lives in
Southern Oregon and much of California, often around farms
Top speed
about 1.2 km/h (0.75 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. If one comes into the house, a grown-up can gently carry it back outside.
What does it eat?
It is a ground beetle, and most ground beetles hunt small creatures on the ground.
For real!Photo of Tule beetle
Picture by Jesse Rorabaugh. CC0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

It has some funny nicknames. People also call it the overflow bug and the grease bug.

2

It is very well known in the farmland of California's Central Valley.

3

Sometimes lots of them come inside houses, which is how many people first meet them.

you asked

Most asked questions about Tule beetle

?Why are tule beetles in my house?

In parts of California there are so many of them that some wander indoors. It is harmless and can be carried back outside.

?Is the tule beetle dangerous?

No. It is a harmless ground beetle.

For bug experts

Scientific name
Tanystoma maculicolle
Group
Beetles
Family
Carabidae
Classification
Insecta > Coleoptera > Carabidae
Lives on
North America
Also known as
Overflow bug, Grease bug

Where the facts come from

  1. Tanystoma maculicolle (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 Jesse Rorabaugh. CC0, Wikimedia Commons. The sticker of this bug is drawn from this picture.

If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at [email protected] and we will fix it.

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