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Orange underwing moth

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description Orange underwing moth Overview

The orange underwing moth (*Archiearis parthenias*) is a day-flying species of moth belonging to the family Geometridae, native to Europe. It is recognized by its vibrant orange hindwings, which are typically concealed under cryptic grey-and-white forewings until it takes flight. Adults are active in the spring, often seen flying around birch trees. Their larvae primarily feed on the foliage of birch, making woodlands with abundant birch growth their primary habitat.

help Orange underwing moth FAQ

How can you identify an orange underwing moth?

The orange underwing moth (*Archiearis parthenias*) is best identified by the bright, vibrant orange coloration on its hindwings, which are usually hidden beneath its forewings when at rest. It has mottled grey and brown forewings that provide excellent camouflage against tree bark.

When is the best time to see the orange underwing moth in nature?

Unlike many moth species, the orange underwing is strictly day-flying and is most active during the spring. You will typically see them flying between March and May, especially on bright, sunny days.

What do orange underwing moth caterpillars eat?

The caterpillars feed primarily on birch trees, particularly favoring silver birch and downy birch. The adult moths can often be found flying around the canopy of these trees or drinking sap from damaged branches.

Where does the orange underwing moth typically live?

This species is native to Europe and is commonly found in woodland habitats, heathland, and moorland. They thrive anywhere there is a strong presence of birch trees, spanning from the UK across to parts of Russia.

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