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Sticker of Red-backed darkling beetle
Bug card No. 3550 of 4,939

Red-backed darkling beetle

Eleodes suturalis
Eats: PlantsBeetlesDeserts and dry places6 legs

The red-backed darkling beetle is a big black beetle with a red stripe right down the middle of its back. That stripe makes it easy to recognise. It lives in the open country of the American West.

Lives in
The middle and west of the United States, from South Dakota to Texas and Arizona
Length
2.1 to 3.6 cm (0.85 to 1.4 in)
males are a bit bigger than females
Top speed
about 0.77 km/h (0.48 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless, but if you bother it, it lets out a smelly liquid. Leave it be, and wash your hands if you touch one.
What does it eat?
Both the grown-ups and the larvae eat seeds of different plants.
For real!Photo of Red-backed darkling beetle
Picture by iNaturalist user: paloma. CC0, via Wikimedia Commons.

How big is it?

How long is it?

Red-backed darkling beetle about 3.6 cm long (1.4 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)
as long as 6 grains of rice in a rowcould run across a dinner table in 4.7 seconds

How big is Red-backed darkling beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

When it is in danger, it lifts its back end up into the air and squirts out a stinky liquid.

2

It is quite big for a beetle: a large male can be more than 3 centimetres long.

3

Its wing cases are flat, and the red stripe runs right down the middle where they meet.

you asked

Most asked questions about Red-backed darkling beetle

?Is the red-backed darkling beetle dangerous?

No. It cannot sting, but it can squirt a smelly liquid if you scare it.

?What does the red-backed darkling beetle eat?

Seeds. Both the beetles and their larvae eat plant seeds.

For bug experts

Scientific name
Eleodes suturalis
Group
Beetles
Family
Tenebrionidae
Classification
Insecta > Coleoptera > Tenebrionidae
Lives on
North America

Where the facts come from

  1. Eleodes suturalis (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 iNaturalist user: paloma. 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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