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Santa Barbara Field Guides Butterflies
Lepidoptera
   Hesperiidae

     Erynnis propertius
     Propertius Duskywing


upperside
underside

Size: wingspread 1.1-1.75 in.
Recognition: Gray-brown; small white spots on outer FW; dark HW fringes; looks hairy due to raised hairs along body.
Flight period: Adults are active from March to July (single generation/year).
Hostplants: The larvae feed on oaks, such as coast live oak (Quercus agrifola) and oregon oak (Q. garryana).
Habitat: This Duskywing prefers oak and pine-oak woodlands.
Distribution: The Propertius Duskywing is found only along the Pacific coast, from British Columbia to Baja California.
Other: A widespread and fairly common butterfly, it is often seen nectaring on such plants as blue dicks ( Dichelostemma ), yerba santa ( Eriodictyon), Ceanothus species, and various milkvetches (Astragalus).

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