Common in gardens, woodland rides, and on calcareous grassland, sand-dunes and sea cliffs throughout much of southern Britain; widely distributed and fairly common in Hampshire and on the Isle of Wight. Wingspan 35-41 mm. The main confusion species is Treble-bar A. plagiata, but innermost fascia usually more sharply angled in A. efformata. Larva feeds on St John's-wort.
Flightime guide |
Stage | J | F | M |
A | M | J |
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O | N | D |
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Larval |
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