Bug Wiki
Sticker of Greenhouse whitefly
Bug card No. 0693 of 1,500

Greenhouse whitefly

Trialeurodes vaporariorum
Eats: PlantsTrue bugs and cicadasGardens and meadows6 legs

The greenhouse whitefly is a tiny insect with four white, waxy wings. It sits under leaves in greenhouses and drinks the plant's sweet juice. If you shake the plant, a little white cloud of them flies up.

Lives in
Cool and mild parts of the whole world, mostly in greenhouses and polytunnels
Length
1 to 2 mm (0.04 to 0.08 in)
Top speed
about 0.01 km/h (0.01 mph)
On foot, estimate
Can it hurt you?
Harmless
Harmless to people. It only bothers plants.
What does it eat?
It pokes its tiny mouth into leaf veins and drinks the sap. It loves tomatoes, potatoes, cucumbers and many garden flowers.
For real!Photo of Greenhouse whitefly
Picture by Desmond W. Helmore. CC BY 4.0, via Wikimedia Commons.

How big is it?

How long is it?

Greenhouse whitefly about 2 mm long (0.08 in)A grain of rice about 6 mm (0.24 in)
3 of them in a row are as long as one grain of riceneeds 6 minutes to cross a dinner table

How big is Greenhouse whitefly compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

How fast is it?

cool stuff

Fun facts

1

Its babies are called crawlers, because they are the only young ones that can walk around.

2

After that the young ones stay put and look like flat, see-through scales on the leaf.

3

It drips sweet, sticky honeydew onto leaves, which is bad for the plants.

4

Gardeners release a tiny wasp called Encarsia that lays its eggs in whitefly young and stops them.

5

The eggs are pale yellow and turn grey just before they hatch.

you asked

Most asked questions about Greenhouse whitefly

?What are the tiny white flies on my tomato plants?

They are probably greenhouse whiteflies. They drink the plant's sap from under the leaves.

?Do whiteflies bite people?

No. They only feed on plants and are harmless to people.

?How big is a greenhouse whitefly?

Only about 1 to 2 millimetres long.

For bug experts

Scientific name
Trialeurodes vaporariorum
Group
True bugs and cicadas
Family
Aleyrodidae
Classification
Insecta > Hemiptera > Aleyrodidae
Lives on
Europe, Asia, North America, South America, Africa, Australia and Oceania
Also known as
Glasshouse whitefly

Where the facts come from

  1. Greenhouse whitefly (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 Desmond W. Helmore. CC BY 4.0, 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 [email protected] and we will fix it.

More from the same group: True bugs and cicadas

Also at home here: Gardens and meadows