Ni moth

insect

Also known as: Trichoplusia ni

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Last updated

July 16, 2026

Quick Summary

The Ni moth, scientifically known as Trichoplusia ni, is a type of owlet moth belonging to the family Noctuidae within the order Lepidoptera. These moths are recognized by their mottled brown wings, each featuring a pale, Y-shaped mark on the forewing. The adult Ni moth has a wingspan of approximately 25 mm (1 inch).1

A distinctive characteristic of the Ni moth is its larva, often called a cabbage looper. This larva has only three pairs of prolegs, which causes it to move in a looping fashion, similar to measuring worms. The cabbage looper is considered an economic pest, particularly affecting crops like cabbages in the United States and Europe. Adult Ni moths are known to migrate over significant distances.1

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cabbage looper
The adults, known as Ni moths, migrate considerable distances. They are mottled brown with a pale Y-shaped mark on each forewing. The typical adult wingspan is about 25 mm (1 inch).
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The adults, known as Ni moths, migrate considerable distances. They are mottled brown with a pale Y-shaped mark on each forewing. The typical adult wingspan is about 25 mm (1 inch).
Read More