Species Digrammia neptaria - Dark-bordered Granite - Hodges#6396

6396

Digrammia neptaria (Guenée, [1858])

formerly Semiothisa neptaria

Phylogenetic sequence #189800

Wingspan 25-30 mm.

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.

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)

Moth Photographers Group - large map with some collection dates.

Dry Jack Pine forests, sandy pine barrens, and boreal or montane forest; adults are attracted to light.

Adults and larvae from May/June to August/September.

Larvae feed on leaves of willow and poplar.

One generation per year in the north; two in the south.

In Digrammia mellistrigata, the PM line is almost straight except for a sharply-bent angle near the costa

D. rippertaria has a more sinuous PM line with less dark shading beyond it

(compare images of all 3 species)

Moth Photographers Group (MPG)