In the palearctic region Noctua pronuba (Linnaeus), the Large Yellow Underwing Moth, ranges from North Africa through Western Europe to Finland and Iceland. In Britain the flight period extends from April to October with peak emergence in August. The larva feeds in winter on grasses and low plants and is often a pest in gardens. This species is occasionally bivoltine when eggs laid early in the year develop to adults in the fall. The moth comes readily to bait (fermented fruit and molasses) applied to tree trunks at dusk, and is also attracted to light. The moth is polymorphic and sexually dimorphic. All of the usual forms are present in Nova Scotia.