Rice leaf-roller

The rice leaf-roller is a small straw-yellow moth with wavy lines on its wings. Its little green caterpillars fold rice leaves around themselves like a sleeping bag. Farmers keep a close eye on it, because it can harm rice fields.

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Fun facts
The caterpillar spins silk to fold a leaf shut and then eats inside it, leaving the leaf whitish.
One mother moth can lay around 56 eggs, and they hatch after 4 to 8 days.
Its whole life, from egg to grown-up moth, takes about five weeks.
The caterpillar changes colour as it grows, from green to yellowish green to reddish brown.
It turns into a pupa inside a folded leaf, wrapped in a thin white cocoon.
Most asked questions about Rice leaf-roller
?Why is the rice leaf-roller a pest?
Its caterpillars fold and eat rice leaves, which makes the plants weaker and gives farmers less rice.
?How big is the rice leaf-roller?
The moth is only about 7 to 9 millimetres long, with wings up to about 1.8 centimetres across.
For bug experts
- Scientific name
- Cnaphalocrocis medinalis
- Group
- Moths
- Family
- Crambidae
- Classification
- Insecta > Lepidoptera > Crambidae
- Lives on
- Asia, Australia and Oceania
- Also known as
- Rice leafroller, Rice leaf folder
Where the facts come from
- Cnaphalocrocis medinalis (Wikipedia, CC BY-SA 4.0): what it looks like, where it lives, what it eats, sizes and fun facts, retold in simple words.
- Picture by Nerdmaxxer. CC BY-SA 4.0, 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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