Western Grapeleaf Skeletonizer Moth
Common NameWestern Grapeleaf Skeletonizer Moth
Scientific NameHarrisina coracina
FamilyZygaenidae
SubfamilyProcridinae
Wingspan (mm)20
Wing Patternsolid
Primary Colorsblack, dark blue
HabitatVineyards, gardens, riparian areas, and other habitats where host plants (grapes, Virginia creeper) are present.
Geographic RangeWestern North America (primarily California, Arizona, Nevada, Utah, Oregon, Washington, and Baja California).
Host PlantsVitis vinifera (common grape vine), Parthenocissus quinquefolia (Virginia creeper), Parthenocissus tricuspidata (Boston ivy)
Flight PeriodMultiple broods from spring to fall, typically May to October.
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae are yellow with black bands and tufts of black hairs, known for skeletonizing grape leaves. They pupate in silken cocoons, often in leaf litter or crevices. Multiple generations occur annually.
Identification TipsDistinguished by its uniform dark metallic blue-black coloration, slender body, and feathery antennae. Often found flying during the day near grapevines or Virginia creeper, its primary host plants.
Description
A small, slender moth with an entirely black or dark metallic blue-black body and wings. It has distinctive feathery (bipectinate) antennae.
