Brick

Appearance

The wingspan is 34–44 mm. Forewing yellow ochreous or ferruginous, sometimes much dusted with fuscous; the lines and edges of stigmata rufous; the inner line waved, the outer lunulate-dentate; submarginal wavy, ochreous, with a rufous line inside it; lower part of reniform blackish; a small dark spot near base of wing; median shade generally present; hindwing grey, the costal area ochreous, the fringe rufous ochreous. The paler ochreous form is the type; the deep ferruginous examples are ''ferruginea'' Especially in ''Agrochola macilenta'' Hbn., the forewings are darkened by fuscous shading, especially along inner and outer margins; the hindwings are blackish grey; the ab. ''fusconervosa'' Petersen has all the nervures dark throughout; in ''nigridens'' Fuchs, a rare form, the cross lines are strongly black and dentate.

Behavior

This moth flies at night from August to October and will come to light but is more strongly attracted to some flowers and sugary foods.

The larva usually feeds on wych elm, with a preference for the flowers and seeds, but has been recorded on other elms, ash, poplar, bird cherry and common osier. The larva is reddish brown, dotted with darker; dorsal line pale, passing through a series of V-shaped dark markings; a pale spiracular line with dark markings in a row above it. This species overwinters as an egg.