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Sticker of Woolly darkling beetle
Bug card No. 4841 of 4,939

Woolly darkling beetle

Eleodes osculans
Eats: Leftovers and dead thingsBeetlesDeserts and dry places6 legs

This black beetle wears a coat of reddish brown hair, like a tiny woolly jumper. It is a stink beetle. When it feels scared, it lifts its bottom high in the air and lets out a smelly liquid.

Lives in
Coastal southern and central California and Baja California, in woods and dry scrubland
Length
1.2 to 1.6 cm (0.47 to 0.63 in)
Top speed
about 0.52 km/h (0.32 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless. It does not bite or sting, but its smell is not nice, so let it walk away.
What does it eat?
Darkling beetles like it mostly nibble on dead plant bits on the ground.
For real!Photo of Woolly darkling beetle
Picture by Junkyardsparkle. CC0, via Wikimedia Commons.

How big is it?

How long is it?

Woolly darkling beetle about 1.6 cm long (0.63 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)
as long as 2.5 grains of rice in a rowcould run across a dinner table in 6.9 seconds

How big is Woolly darkling beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It is the only known darkling beetle with reddish brown hair over most of its black body.

2

Its headstand trick is easy to see: bottom up, smell on.

3

Two of its cousins look much like it, but their hair is darker.

you asked

Most asked questions about Woolly darkling beetle

?Why does the woolly darkling beetle stand on its head?

It lifts its bottom to warn enemies, and then lets out a bad-smelling liquid.

?Is the woolly darkling beetle dangerous?

No. It is harmless, it just smells bad when it is scared.

For bug experts

Scientific name
Eleodes osculans
Group
Beetles
Family
Tenebrionidae
Classification
Insecta > Coleoptera > Tenebrionidae
Lives on
North America
Also known as
Woolly ground beetle

Where the facts come from

  1. Eleodes osculans (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 Junkyardsparkle. 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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More from the same group: Beetles

Also at home here: Deserts and dry places

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