About Choreutis diana Bradley, 1961
Choreutis diana has a wingspan ranging from 14 to 18 mm. Adult flight periods vary by location: in Canada, adults have been recorded from mid-April to mid-May, in June, and from July to September. In the United Kingdom, adults are on wing during July and August. Adult individuals of this species have been observed visiting thistle flowers. The larvae feed on a wide range of host plants: red alder (Alnus rubra), grey alder (Alnus incana), paper birch (Betula papyrifera), balsam poplar (Populus balsamifera), willows (Salix species) and cherries (Prunus species). This species is a solitary leafroller, and larvae can be found under a silken web on the upper surface of their host plant's leaf. Frass produced by the larvae is trapped in this silken web. In North America, larvae have been recorded from mid-June to late July. This species is distributed across northern North America and most of Europe. Within Britain, it is only known from a single site: Glen Affric, located in the Highland region of Scotland.
