A fairly common resident in the south, less so in the north.

A species of fens, marshy areas, damp woodland.

Overwinters as a pupa, adults only sparingly attracted to light.

Note The name comes from the triangle of spots made by the discal spot and two others on the leading edge of the wing. These are not always easy to see and dissection is often required.

Verification Grade Comment: Ideally take a photo.

Recorded in 57 (41%) of 140 10k Squares. First Recorded in 1867. Last Recorded in 2023. (Data up to end 2023) Additional Stats

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