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Sticker of Cactus lady beetle
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Cactus lady beetle

Chilocorus cacti

The cactus lady beetle is a shiny black, dome-shaped ladybird with two big reddish spots. It is often found on prickly pear cactuses and palm trees. It is a hungry hunter of scale insects, which harm plants.

Lives in
The southern United States, Mexico, the Caribbean and northern South America, and brought to Africa, India and New Zealand
Length
6 mm (0.24 in)
Top speed
about 30 km/h (19 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. Ladybirds are friends of gardeners.
What does it eat?
Both the beetles and their larvae eat scale insects and other small plant pests.
For real!Photo of Cactus lady beetle
Picture by Sam Fraser-Smith from Brisbane, Australia. CC BY 2.0, via Wikimedia Commons.

How big is it?

How long is it?

Cactus lady beetle about 6 mm long (0.24 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 13 secondsmoves 1400 times its own body length every second

How big is Cactus lady beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

Its larvae are black with a yellowish brown belt and have big black spines on their backs.

2

Its pupa is diamond-shaped, spiny and mottled black and brown.

3

Birds and lizards seem to leave it alone. Its black and red colours warn that it tastes bad.

4

Farmers in several countries have used it to fight pests on citrus and other crops.

you asked

Most asked questions about Cactus lady beetle

?What does the cactus lady beetle eat?

Scale insects and other small pests that suck the juice of plants.

?Why is it called the twice-stabbed lady beetle?

Its two red spots on a black back look a bit like two little wounds.

For bug experts

Scientific name
Chilocorus cacti
Group
Ladybirds
Family
Coccinellidae
Classification
Insecta > Coleoptera > Coccinellidae
Lives on
North America, South America, Africa, Asia, Australia and Oceania
Also known as
Twice-stabbed cactus lady beetle

Where the facts come from

  1. Chilocorus cacti (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 Sam Fraser-Smith from Brisbane, Australia. 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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More from the same group: Ladybirds

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