Attributes of Hemileuca eglanterina

Western sheepmoth
Hemileuca eglanterina (Boisduval, 1852)

Family: Saturniidae
Subfamily: Hemileucinae
Identification: Highly variable. Upperside of forewing is yellow-orange to cream to pink with black markings. Upperside of hindwing is yellow-orange to orange with narrow to wide black markings. Form denudata (northwestern Wyoming west to Washington, south through the Central Valley of California) has no markings on either wing. Subspecies shastaensis (northern California and southern Oregon) has a pink forewing with diffuse black markings or is mostly black with some pink spots.
Wing Span: 2 9/16 - 3 7/16 inches (6.5 - 8.7 cm).
Life History: Adults emerge in early morning and mate in late morning. Females lay eggs in rings on plant stems. Eggs overwinter and hatch in April and May. Young caterpillars feed together in groups and when they are older they feed alone. Fully-grown caterpillars pupate in loose cocoons in the leaf litter or in burrows in soft soil, and adults emerge from July-September. At high elevations and northern latitudes, 2 years are needed to complete development. The cocoons overwinter and in the spring the adults emerge and start the cycle again.
Flight: One brood from June-September.
Caterpillar Hosts: Mountain lilac (Ceanothus), mountain-mahogany (Cercocarpus montanus), bitter cherry (Prunus emarginata), bitterbrush (Purshia tridentata), snowberry (Symphoricarpos), currant (Ribes), wild rose (Rosa), willow (Salix) and others.
Adult Food: Adults do not feed.
Habitat: From sea level to at least 8400 feet in a variety of habitats including chaparral, pine and redwood forests, oak woodlands, and riparian areas.
Range: Southeastern Alberta west to Vancouver Island, British Columbia; south to central Montana, Wyoming, central Colorado, northern Arizona, and southern California.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Taxonomy Notes:

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Observation Datesort icon Submitter Region Verified Date
January 01, 1950 legacy.reporter Colusa County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Contra Costa County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter El Dorado County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Inyo County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Kern County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Marin County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Mono County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Nevada County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Orange County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Placer County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Plumas County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Sacramento County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter San Bernardino County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter San Diego County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter San Mateo County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Santa Clara County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Shasta County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Siskiyou County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Solano County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Trinity County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Tulare County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Tuolumne County, California, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Eagle County, Colorado, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Grand County, Colorado, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Gunnison County, Colorado, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Jefferson County, Colorado, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Larimer County, Colorado, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Moffat County, Colorado, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Rio Blanco County, Colorado, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Bonner County, Idaho, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Latah County, Idaho, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Shoshone County, Idaho, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Missoula County, Montana, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Sweet Grass County, Montana, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Colfax County, New Mexico, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Benton County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Deschutes County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Douglas County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Jackson County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Jefferson County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Josephine County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Klamath County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Lane County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Wasco County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Yamhill County, Oregon, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Iron County, Utah, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Kane County, Utah, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Sevier County, Utah, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Tooele County, Utah, United States December 31, 2004 Details
January 01, 1950 legacy.reporter Washington County, Utah, United States December 31, 2004 Details