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Sticker of Asian citrus psyllid
Bug card No. 0057 of 1,500

Asian citrus psyllid

Diaphorina citri
Eats: PlantsTrue bugs and cicadasGardens and meadows6 legs

The Asian citrus psyllid is a tiny brown bug that looks as if it is covered in dust. It sucks juice from orange and lemon trees, standing with its head down and its tail up. It can carry a germ that makes citrus trees very sick.

Lives in
First from southern Asia, now also in the Middle East, the Americas and the Caribbean, on citrus trees
Length
4 mm (0.16 in)
Top speed
about 0.01 km/h (0.01 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. It is only a danger to citrus trees.
What does it eat?
It sucks sap from the new shoots of citrus trees, like oranges and lemons.
For real!Photo of Asian citrus psyllid
Picture by David Hall. Public domain, via Wikimedia Commons.

How big is it?

How long is it?

Asian citrus psyllid about 4 mm long (0.16 in)A grain of rice about 6 mm (0.24 in)
small enough to sit on your fingernailneeds 6 minutes to cross a dinner table

How big is Asian citrus psyllid compared to YOU?

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How fast is it?

cool stuff

Fun facts

1

It spreads citrus greening, a disease that makes orange and lemon trees very sick. That is much worse than the sucking itself.

2

Unlike aphids, which sit still, psyllids are lively and can jump.

3

A female can lay up to 800 tiny eggs on the tips of new shoots.

4

Its eggs change colour from pale to yellow to orange before they hatch.

5

Ladybirds and some small wasps hunt it and help farmers keep it under control.

you asked

Most asked questions about Asian citrus psyllid

?Why is the Asian citrus psyllid a problem?

It carries citrus greening disease, which harms orange, lemon and other citrus trees.

?How big is the Asian citrus psyllid?

It is only about 4 millimetres long.

?Does the Asian citrus psyllid bite people?

No. It only sucks sap from plants.

For bug experts

Scientific name
Diaphorina citri
Group
True bugs and cicadas
Family
Liviidae
Classification
Insecta > Hemiptera > Liviidae
Lives on
Asia, North America, South America

Where the facts come from

  1. Diaphorina citri (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 David Hall. Public domain, 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 [email protected] and we will fix it.

More from the same group: True bugs and cicadas

Also at home here: Gardens and meadows