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Sticker of Ocellate gall midge
Bug card No. 3093 of 4,939

Ocellate gall midge

Acericecis ocellaris
Eats: PlantsFlies and mosquitoesForests and woods6 legs

The ocellate gall midge is a tiny fly that lives on maple trees in North America. Its babies make round spots on maple leaves that look like little eyes. These spots are called galls, and the baby grows up safely inside one.

Lives in
North America, on maple trees
Top speed
about 8 km/h (5 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It does not bite people, and the spots do not really hurt the tree.
What does it eat?
Its babies live inside a little gall on a maple leaf and feed on the leaf there.
For real!Photo of Ocellate gall midge
Picture by Adam Kranz. CC0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

The spots it makes on leaves look like little blisters.

2

It lives on many kinds of maple, such as red maple, sugar maple and silver maple.

3

A scientist first described it in 1862, and it was the first species put in its group.

you asked

Most asked questions about Ocellate gall midge

?Is the ocellate gall midge dangerous?

No. It is a tiny fly that does not bite people.

?What are the spots on maple leaves?

Some round spots are galls made by this tiny fly. Its baby grows up inside the spot.

For bug experts

Scientific name
Acericecis ocellaris
Named by
Osten-Sacken, 1862
Group
Flies and mosquitoes
Family
Cecidomyiidae
Classification
Insecta > Diptera > Cecidomyiidae
Lives on
North America
Also known as
Maple eyespot gall, Maple leaf spot gall

Where the facts come from

  1. Acericecis ocellaris (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 Adam Kranz. 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: Forests and woods

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