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Sticker of Salvinia stem borer moth
Bug card No. 3729 of 4,939

Salvinia stem borer moth

Samea multiplicalis
Eats: PlantsMothsPonds, rivers and shores6 legs

The salvinia stem borer moth is a tan moth with darker patterns that lives on floating water plants. Its pale yellow to green caterpillars munch on plants like water lettuce and water fern. People even brought it to Australia to help eat weeds that cover ponds.

Lives in
From the southern United States to Argentina, and in eastern Australia, on ponds, lakes and slow rivers
Top speed
about 14 km/h (8.7 mph)
Flying, estimate
Can it hurt you?
Harmless
Harmless. Moths cannot bite or sting.
What does it eat?
Its caterpillars bore into the stems or eat the leaves of floating water plants such as water lettuce and water ferns.
For real!Photo of Salvinia stem borer moth
Picture by Donald Hobern from Copenhagen, Denmark. CC BY 2.0, via Wikimedia Commons.

How fast is it?

cool stuff

Fun facts

1

In 1981 it was taken to Australia to fight a water fern that was growing out of control.

2

The caterpillars work as a team. Together they spin a silk tent over the spot where they eat, which keeps them safe.

3

Its whole life, from egg to old moth, lasts only about three to four weeks.

4

A female lays about 150 eggs on the leaves of water plants.

5

It likes it warm and does best at about 30 degrees.

you asked

Most asked questions about Salvinia stem borer moth

?What does the salvinia stem borer eat?

Its caterpillars eat floating water plants like water lettuce and water ferns.

?Why was it brought to Australia?

To help control a water fern that was covering lakes and ponds.

For bug experts

Scientific name
Samea multiplicalis
Named by
Guenée, 1854
Group
Moths
Family
Crambidae
Classification
Insecta > Lepidoptera > Crambidae
Lives on
North America, South America, Australia and Oceania
Also known as
Salvinia stem-borer moth

Where the facts come from

  1. Samea multiplicalis (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 Donald Hobern from Copenhagen, Denmark. CC BY 2.0, 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: Moths

Also at home here: Ponds, rivers and shores

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