Western White-Ribboned Carpet
Common NameWestern White-Ribboned Carpet
Scientific NameXanthorhoe defensaria
FamilyGeometridae
SubfamilyLarentiinae
Wingspan (mm)28
Primary Colorswhite, black, brown
HabitatConiferous and mixed forests, clearings, riparian areas
Geographic RangeWestern North America (Alaska to California, east to Rocky Mountains)
Host Plantsalder, willow, poplar, birch, huckleberry
Flight PeriodMay to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesUndergoes complete metamorphosis: eggs hatch into larvae (caterpillars) that feed on host plants, then pupate in soil or leaf litter before emerging as adult moths.
Identification TipsKey features include the bold black and white pattern, particularly the broad, irregular black median band on the forewing, and the entirely black head and thorax. The specific shape of the black markings helps distinguish it from similar species.
Description
This moth features striking white forewings adorned with broad, irregular black bands and patches, including a prominent dark median band. Its hindwings are mostly white with subtle dusky markings, and its head and thorax are black.
