Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Rabbitbrush Webbing Moth
Synnoma lynosyrana (Walsingham, 1879)


Family: Tortricidae
Subfamily: Tortricinae
Identification: Body and legs are covered in short black and long white scales. Males with pale ochreous yellow forewing and two diffuse, oblique, silvery white fasciae. Hindwing dark gray brown. Females dark gray with blue iridescence and scattered orange scales. Hindwing dark gray. The wings of both sexes have a ruffled appearance, with many upraised scales.
Wing Span: 1.4-2.0 cm
Life History:
Flight: September to October in the north, to November in southern California.
Caterpillar Hosts: Northern populations feed on Ericameria nauseosa and Chrysothamnus viscidiflorus. Those in southern Nevada and Arizona eastward feed on Gutierrezia. An apparently disjunct population at the western edge of the Mojave uses both plant genera.
Adult Food:
Habitat:
Range: Southern Montana, Idaho, and eastern Oregon to eastern California, Arizona, and western Texas.
Conservation:
NCGR:
Management Needs:
Comments: Diurnally active. Females winged, but flightless.
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