Appearance
The wingspan is 42–50 mm. The length of the forewings is 18–22 mm. The ground colour is orange yellow. The forewings are lightly or heavily speckled and have a dark marginal edge. Both forewings and hindwings are scalloped at the edges and have two cross lines. The discal spot is not always evident.It is similar to "Ennomos alniaria", but distinguished by the postmedian line curving inwards towards the costa.
Distribution
It is found in some but not all of western Europe, Belgium, The Netherlands, the Iberian Peninsula and to the east in Greece, Hungary, Romania, European Turkey, Ukraine and to the south, the Iberian Peninsula, Italy and Sicily.Behavior
The moths fly in one generation from August to September. They are attracted to light.The caterpillars feed on oak and beech.
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