Local in reed-beds, marshes, river-banks, fens and gardens throughout much of south-east England, discontinuously north to Lancashire and north-west Wales. In Hampshire and on the Isle of Wight present in most reed-beds, especially on the coast. Wingspan 27-33 mm. The main confusion species is White-mantled Wainscot A. neurica, but A. dissoluta has small black central spot on the underside of both hindwing and forewing, absent in A. neurica. Larva feeds on Common Reed, over-wintering as an egg and pupating low down in the stem of the foodplant, head downwards.
Flightime guide |
Stage | J | F | M |
A | M | J |
J | A | S |
O | N | D |
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Larval |
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