description Knot grass moth Overview
The knot grass moth, Acronicta rumicis, is a noctuid moth distributed across much of the Palearctic region and first described by Carl Linnaeus in 1758. Adults have mottled gray-brown forewings that provide camouflage against bark and other surfaces. Its conspicuously hairy caterpillar feeds on a broad range of plants, including docks, knotgrass, bramble, and the foliage of several deciduous trees and shrubs.
help Knot grass moth FAQ
What is the scientific name of the knot grass moth?
The knot grass moth is Acronicta rumicis. Carl Linnaeus first described the species in 1758.
Where is Acronicta rumicis found?
It is distributed across much of the Palearctic region. That broad range covers large parts of Europe and temperate Asia, rather than a single local habitat.
How can I identify an adult knot grass moth?
Adults have mottled gray-brown forewings that camouflage them against bark and similar surfaces. The pattern makes the resting moth less conspicuous than its common name might suggest.
Why is the knot grass moth caterpillar so noticeable?
The caterpillar is conspicuously hairy, unlike the muted gray-brown adult moth. It is the larval stage of Acronicta rumicis and feeds on plants before changing into the adult moth.
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