Attributes of Hemileuca nuttalli
Nuttall's sheepmoth
Hemileuca nuttalli (Strecker, 1875)
Family: Saturniidae
Subfamily: Hemileucinae
Identification: Upperside of hindwing is yellow, forewing is usually a lighter yellow to cream. Both wings have black markings which in some individuals are very wide.
Wing Span: 2 11/16 - 3 1/4 inches (6.9 - 8.3 cm).
Life History: Adults emerge in the morning and mate in the early afternoon. Females lay eggs in rings around host plant stems. Eggs overwinter and hatch in May and June. Young caterpillars feed together in groups and when 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. Cocoons overwinter and in the spring the adults emerge.
Flight: One brood from July-September.
Caterpillar Hosts: Bitterbrush (Purshia tridentata), snowberry (Symphoricarpos), currant (Ribes), and desert sweet (Chamaebatiaria millefolium).
Adult Food: Adults do not feed.
Habitat: Sagebrush scrub, pinyon-juniper woodland, and sagebrush meadows.
Range: Southern British Columbia south down the east side of the Sierra Nevada, east to western Montana, western Wyoming, and western Colorado.
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:
Images of Hemileuca nuttalli
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The map below displays all verified sighting records in the BAMONA database for this species. Each record is indicated with a yellow dot. The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. In some instances, there are several records at the same location. Use the table view to access these records.
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The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
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August 22, 2010 | Dwaine Wagoner | Natrona County, Wyoming, United States | February 10, 2011 | Details |
| January 01, 1950 | legacy.reporter | Inyo 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 | Tuolumne County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Delta 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 | Mesa 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 Grande County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Juan County, Colorado, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Ada County, Idaho, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Butte County, Idaho, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Owyhee County, Idaho, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Rio Arriba County, New Mexico, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Eureka County, Nevada, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lander County, Nevada, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lyon County, Nevada, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | White Pine County, Nevada, 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 | Grand County, Utah, 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 | 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 | Morgan County, Utah, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Salt Lake County, Utah, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Adams County, Washington, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Benton County, Washington, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Chelan County, Washington, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Kittitas County, Washington, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Okanogan County, Washington, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Whitman County, Washington, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Yakima County, Washington, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lincoln County, Wyoming, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Teton County, Wyoming, United States | December 31, 2004 | Details |
