It can be found in North America, from Texas to Colorado.

The noctuid species, G. septempunctata, has a pure white head and thorax with an abdomen brown, tinged with a yellowish white.

The palpi and frons are black brown and the antennae are yellow.

Tibiae and tarsi banded with black; forewing almost pure white; the costal edge black towards base; subbasal black points below costa and cell; small antemedial black spots on costa, in submedian fold, and on inner margin, the spot in the fold slightly nearer the base; small postmedial black spots on costa, discocellulars, in submedian fold and on inner margin.

Hindwing white, the apical area to the discocellulars and vein 3 tinged with fuscous brown.