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Sticker of Tortoise-shelled lady beetle
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Tortoise-shelled lady beetle

Harmonia testudinaria

The tortoise-shelled lady beetle is a yellow or light orange ladybird with a black net pattern on its back. The pattern looks a bit like the shell of a tortoise. It is a little hunter that keeps plants free of aphids.

Lives in
Australia, New Guinea and Indonesia, and people brought it to Hawaii
Length
6 mm (0.24 in)
Top speed
about 30 km/h (19 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is a friendly helper in the garden.
What does it eat?
It eats aphids and other small insects, including the giant willow aphid.
For real!Photo of Tortoise-shelled lady beetle
Picture by Toby Hudson. CC BY-SA 3.0 au, via Wikimedia Commons.

How big is it?

How long is it?

Tortoise-shelled 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 Tortoise-shelled lady beetle compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

When it first comes out of its pupa, it is all yellow. The black net pattern appears later.

2

Ones from New Guinea often have almost no net pattern, just a black line down the middle and a few small spots.

3

Its larva is brownish with creamy marks, and its pupa is orange yellow.

4

It has two black stripes across the part behind its head.

you asked

Most asked questions about Tortoise-shelled lady beetle

?What does the tortoise-shelled lady beetle eat?

It eats aphids and other small insects.

?Is the tortoise-shelled lady beetle harmful?

No. It is harmless to people and helps gardens by eating aphids.

For bug experts

Scientific name
Harmonia testudinaria
Group
Ladybirds
Family
Coccinellidae
Classification
Insecta > Coleoptera > Coccinellidae
Lives on
Australia and Oceania, Asia
Also known as
Tortoise-shelled ladybird

Where the facts come from

  1. Harmonia testudinaria (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 Toby Hudson. CC BY-SA 3.0 au, 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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