A common resident in the south where its foodplant is more abundant. Rare in Staffordshire; scarce in Shropshire.

A species of woods, hedges and scrub on limestone.

Overwinters as a pupa, adults come to light.

Note: Horisme radicaria Cryptic Fern was split from H. tersata during 2019.

Verification Grade Comment: A photo is required if away from regular sites or if Cryptic Fern is suspected.

Recorded in 34 (24%) of 140 10k Squares. First Recorded in 1867. Last Recorded in 2024. (Data up to end 2024) Additional Stats

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