Eggar - Oak or Northern?

Eggar - Oak or Northern?

Observation - Eggar - Oak or Northern?. Description: Observed on the edge of a cultivated field, next to hedgerows, and near woodland and a flowering grassy meadow. The forewing length was approx. 30-35mm

Observed on the edge of a cultivated field, next to hedgerows, and near woodland and a flowering grassy meadow. The forewing length was approx. 30-35mm