140159 Oak Hook-tip Watsonalla binaria Wingspan 25-35mm. A distinctive moth with hook-tipped forewings. Adult male has rich brown wings with pale cross lines and dark spots on forewing. Female is larger, with similar markings but buffish forewings and yellow hindwings. Double-brooded: flies May–June, and again in August. Larva has an angular appearance and feeds on oak leaves. Common only in southern and central Britain.