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Sticker of Mountain lady beetle
Bug card No. 2925 of 4,939

Mountain lady beetle

Coccinella monticola

The mountain lady beetle is a small ladybird from North America. Its wing covers are usually red, with two oval spots on each side and one more spot just behind its head. That pattern makes it fairly easy to recognise.

Lives in
Western and north-eastern North America, from Yukon down to New Mexico
Length
5.2 to 7 mm (0.2 to 0.28 in)
Top speed
about 32 km/h (20 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is a little ladybird that cannot hurt people.
What does it eat?
Like other ladybirds of its kind, it hunts tiny soft bugs such as aphids.
For real!Photo of Mountain lady beetle
Picture by Judy Gallagher. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Mountain lady beetle about 7 mm long (0.28 in)A grain of rice about 6 mm (0.24 in)A toy building brick about 3.2 cm (1.3 in)
small enough to sit on your fingernailcould fly across a whole football pitch in 12 secondsmoves 1300 times its own body length every second

How big is Mountain lady beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Its wing covers are usually red, but some are orange or even yellow.

2

The spots are not always the same. On some beetles they are bigger or rounder than on others.

3

It looks a lot like another ladybird called Coccinella difficilis, so even experts have to look closely.

4

Most of them live in the west, but a small group lives far away in the east, from the Great Lakes to Nova Scotia and Massachusetts.

you asked

Most asked questions about Mountain lady beetle

?How big is a mountain lady beetle?

It is about 5 to 7 millimetres long, a bit smaller than a pea.

?Is the mountain lady beetle dangerous?

No. It is a small ladybird and harmless to people.

For bug experts

Scientific name
Coccinella monticola
Group
Ladybirds
Family
Coccinellidae
Classification
Insecta > Coleoptera > Coccinellidae
Lives on
North America
Also known as
Tamarack ladybug

Where the facts come from

  1. Coccinella monticola (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 Judy Gallagher. CC BY 2.0, 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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