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Large Yellow Underwing Moth

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description Large Yellow Underwing Moth Overview

The large yellow underwing is the moth species Noctua pronuba, a member of the family Noctuidae. Adults usually have variable brown forewings that conceal orange-yellow hindwings marked by a dark band, a pattern that becomes visible when the moth flies. The species is native across much of Europe and parts of Eurasia and North Africa, and it was first recorded in North America in Nova Scotia in 1979 before spreading widely there.

help Large Yellow Underwing Moth FAQ

How can I identify a large yellow underwing moth?

The species is Noctua pronuba, in the family Noctuidae. Its forewings can range from light brown to very dark brown, while the hidden hindwings are orange-yellow with a dark band. ([Animal Diversity Web](https://animaldiversity.org/accounts/Noctua_pronuba/))

Is the large yellow underwing native to North America?

No. Noctua pronuba is native to Europe, North Africa, and parts of Eurasia, and it was introduced to North America around Halifax, Nova Scotia, in 1979. It has since spread widely across Canada and the United States.

How large is a large yellow underwing moth?

Its wingspan is commonly around 50 to 60 millimeters, although individual size varies. Adults are nocturnal and are often attracted to lights, especially during the main summer flight season.

Do large yellow underwing caterpillars damage plants?

The larvae are commonly called winter cutworms and feed at night on a wide range of grasses, crops, ornamentals, and wild plants. In some regions, outbreaks have damaged turf and field crops, but the species is not equally harmful in every garden.

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