Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Dark-bordered Granite Moth
Digrammia neptaria (Guenée, 1858)

Family: Geometridae
Subfamily: Ennominae
Identification: forewing light grayish-brown with speckling and variably faint or bold markings; AM and PM lines bicolored orangish-yellow for most of length, changing to gray near costa; PM line slightly sinuous, the yellowish part bordered distally by diffuse gray or blackish shading; discal spot oval, hollow, sometimes diffuse; median line faint, wavy; terminal line composed of several dark dots. Hindwing slightly paler, speckled, with faint discal spot; AM and PM lines dark at inner margin, otherwise faded or absent
Wing Span: 2.5-3.0 cm
Life History:
Flight: May/June to August/September
Caterpillar Hosts: leaves of willow and poplar
Adult Food:
Habitat: dry Jack Pine forests, sandy pine barrens, and boreal or montane forest
Range: Yukon, Northwest Territories, and BC to Newfoundland, south in the east to New Hampshire, south in the west to California, Arizona, New Mexico (one Texas record in 2001)
Management Needs:
Taxonomy Notes: None.