Bug Wiki
Sticker of Oak besma moth
Bug card No. 3059 of 4,939

Oak besma moth

Besma quercivoraria
Eats: PlantsMothsForests and woods6 legs

The oak besma is a moth from North America. Its caterpillars munch the leaves of oak and many other trees. The males and females look different from each other.

Lives in
Southern Canada and almost all of the United States, in woods
Wingspan
2.7 to 4.1 cm (1.1 to 1.6 in)
Top speed
about 14 km/h (8.7 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. It is a moth that cannot bite or sting.
What does it eat?
Its caterpillars eat the leaves of oak, elm, poplar, willow, spruce and birch.
For real!Photo of Oak besma moth
Picture by NCBioTeacher. CC0, via Wikimedia Commons.

How big is it?

How wide are its wings?

Oak besma moth wings about 4.1 cm tip to tip (1.6 in)A toy building brick about 3.2 cm (1.3 in)A crayon about 9 cm (3.5 in)A banana about 18 cm (7.1 in)
wings as wide as 7 grains of rice in a rowcould fly across a whole football pitch in 27 seconds

How big is Oak besma moth compared to YOU?

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

How fast is it?

cool stuff

Fun facts

1

It has two generations each year.

2

In southern Canada its caterpillars like paper birch best of all.

3

It lives across southern Canada and almost all of the United States, but not in California.

4

In the south, the grown-up moths fly from April to September.

you asked

Most asked questions about Oak besma moth

?What does the oak besma eat?

Its caterpillars eat the leaves of oak and many other trees, like elm, poplar, willow and birch.

?Where does the oak besma live?

In southern Canada, from Newfoundland to British Columbia, and in all of the United States except California.

For bug experts

Scientific name
Besma quercivoraria
Named by
Guenée, 1857
Group
Moths
Family
Geometridae
Classification
Insecta > Lepidoptera > Geometridae
Lives on
North America
Also known as
Oak besma

Where the facts come from

  1. Besma quercivoraria (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 NCBioTeacher. 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.

Bug Wiki honey jar For grown-ups: Bug Wiki is free, with no ads and no tracking. A small tip helps keep it online.Leave a tip

More from the same group: Moths

Also at home here: Forests and woods

Honey jarfor grown-ups