Twenty-spotted ladybird
The twenty-spotted ladybird is a tiny white ladybird covered in dark or orange spots. On the part behind its head it has dark spots shaped like the letter M. Unlike most ladybirds, it does not eat bugs. It eats a white powdery mould that grows on leaves.

How big is it?
How long is it?
How big is Twenty-spotted ladybird compared to YOU?
Just maths in your browser. Nothing is saved or sent anywhere.
How fast is it?
Fun facts
It is so small, only up to 3 millimetres long, that it could sit on a grain of rice.
It finds sick, mouldy plants by smell.
Farmers might one day use it instead of sprays to keep powdery mildew off their crops.
It can live for one or two years.
Its larva starts out white and hairy and gets a dark stripe as it grows.
Most asked questions about Twenty-spotted ladybird
?What does the twenty-spotted ladybird eat?
Powdery mildew, a white mould that grows on leaves.
?How big is the twenty-spotted ladybird?
Tiny, only about 2 to 3 millimetres long.
?Does it really have twenty spots?
Its name says twenty, and it has lots of dark or orange spots on a white back.
For bug experts
- Scientific name
- Psyllobora vigintimaculata
- Named by
- Say, 1824
- Group
- Ladybirds
- Family
- Coccinellidae
- Classification
- Insecta > Coleoptera > Coccinellidae
- Lives on
- North America
- Also known as
- Twenty-spotted lady beetle
Where the facts come from
- Psyllobora vigintimaculata (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
- Picture by Judy Gallagher. CC BY 2.0, Wikimedia Commons. The round sticker of this bug is cut from the same picture.
If we got something wrong, sorry, we are bug fans, not a science journal. Tell us at hello@bugwiki.app and we will fix it.