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Sticker of Sagebrush woolly stem gall midge
Bug card No. 3723 of 4,939

Sagebrush woolly stem gall midge

Rhopalomyia floccosa
Eats: PlantsFlies and mosquitoesDeserts and dry places6 legs

The sagebrush woolly stem gall midge is a tiny fly from California. It makes the California sagebrush plant grow little white balls that look like fluffy wool. These balls are called galls, and the midge's babies live safely inside them.

Lives in
California, on California sagebrush
Top speed
about 8 km/h (5 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is a tiny midge that does not bite people.
What does it eat?
Its larvae live inside the woolly galls and feed on the California sagebrush plant.
For real!Photo of Sagebrush woolly stem gall midge
Picture by Daniel Das. CC0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

One gall is about 5 millimetres across, like a small fluffy ball.

2

When many galls grow together, the clump can be 3 to 4 centimetres long.

3

Each gall has just one little room inside.

4

The galls grow out of the plant's buds.

you asked

Most asked questions about Sagebrush woolly stem gall midge

?What is a gall?

A gall is a lump that a plant grows when an insect makes it do so. The insect's baby lives and eats inside it.

?Where does the sagebrush woolly stem gall midge live?

In California, on the California sagebrush plant.

For bug experts

Scientific name
Rhopalomyia floccosa
Group
Flies and mosquitoes
Family
Cecidomyiidae
Classification
Insecta > Diptera > Cecidomyiidae
Lives on
North America

Where the facts come from

  1. Rhopalomyia floccosa (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 Daniel Das. CC0, 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: Flies and mosquitoes

Also at home here: Deserts and dry places

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