California Hairstreak
Satyrium californica (W.H. Edwards, 1862)
Family: Lycaenidae
Subfamily: Theclinae
Identification: Each hindwing has 1 long and 1 short tail. Upperside brown with orange spot on hindwing near tails. Outer edge of forewing usually has row of orange spots. Underside brown-gray with orange submarginal crescents and a postmedian band of black spots.
Wing Span: 1 - 1 1/4 inches (2.5 - 3.2 cm).
Life History: Males search for females by perching on top of trees (occasionally patrolling). Females lay eggs, glued together in groups of 2-4, in bark crevices. Eggs hibernate until the following spring. Caterpillars eat leaves.
Flight: One flight from May-August.
Caterpillar Hosts: Amelanchier alnifolia, Prunus virginiana; Cercocarpus, Ceanothus, Quercus, and Salix species.
Adult Food: Nectar from flowers of wild buckwheat, milkweed, sulphur flower, and others.
Habitat: Chaparral, brushland, forest edges, open woodland.
Range: British Columbia south to southern California and east to Colorado.
Conservation: Valley oak-associated population in California\'s central valley is threatened by loss of habitat.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: Conserve remaining stands of Valley oak in California Central Valley.
Comments: NULL
Alternate Scientific Names:
Satyrium californicum
Thank you!
We want to express our gratitude to all who showed their support by making a contribution this year. You can donate to support this project at any time.
Verified Sightings
Displaying 1 - 24 of 390 verified sightings
Observation date: Jun 01, 2023
Submitted by: hiker96
Region: Klickitat County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 04, 2023
Observation date: May 31, 2023
Submitted by: Dobber31
Region: Santa Clara County, California, United States
Verified by: Ken Davenport
Verified date: Jun 01, 2023
Observation date: Jul 25, 2022
Submitted by: gasigr
Region: Lake County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 06, 2023
Observation date: Jul 25, 2022
Submitted by: gasigr
Region: Lake County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 06, 2023
Observation date: Aug 22, 2022
Submitted by: MAKI
Region: Lincoln County, Nevada, United States
Verified by: Ken Davenport
Verified date: Oct 13, 2022
Observation date: May 01, 2022
Submitted by: ezeemonee
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: May 02, 2022
Observation date: Jun 16, 2018
Submitted by: Robert Gorman
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Dec 08, 2021
Observation date: Aug 02, 2017
Submitted by: Mark Salvato
Region: Alpine County, California, United States
Verified by: Ken Davenport
Verified date: Nov 16, 2021
Observation date: Jun 14, 2018
Submitted by: Mark Salvato
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Oct 14, 2021
Observation date: Jun 08, 2018
Submitted by: Mark Salvato
Region: San Benito County, California, United States
Verified by: Ken Davenport
Verified date: Oct 11, 2021
Observation date: Jul 04, 2021
Submitted by: J Shipman
Region: Bannock County, Idaho, United States
Verified by: stevekohler
Verified date: Sep 04, 2021
Observation date: Jun 07, 2021
Submitted by: Mark Salvato
Region: San Diego County, California, United States
Verified by: Ken Davenport
Verified date: Aug 19, 2021
Observation date: Jul 18, 2021
Submitted by: butterfly rose
Region: El Paso County, Colorado, United States
Verified by: mikefisher
Verified date: Jul 27, 2021
Observation date: Jul 07, 2021
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Jul 20, 2021
Observation date: Jun 15, 2021
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Jul 03, 2021
Observation date: Jun 15, 2021
Submitted by: jrmbutterfly
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Jul 03, 2021
Observation date: May 30, 2021
Submitted by: MAKI
Region: Santa Barbara County, California, United States
Verified by: Ken Davenport
Verified date: Jun 05, 2021
Observation date: May 31, 2021
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Jun 04, 2021
Observation date: Aug 14, 2020
Submitted by: J_Martineau
Region: Fremont County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jan 18, 2021
Observation date: Jul 21, 2020
Submitted by: EvSherr
Region: Deschutes County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 22, 2020
Observation date: Jul 19, 2020
Submitted by: EvSherr
Region: Deschutes County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 19, 2020
Observation date: Jul 17, 2020
Submitted by: EvSherr
Region: Deschutes County, Oregon, United States
Verified by: Ken Davenport
Verified date: Jul 17, 2020
Observation date: Jun 14, 2020
Submitted by: guy_incognito
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Jun 21, 2020
Observation date: Jun 07, 2020
Submitted by: ezeemonee
Region: Ventura County, California, United States
Verified by: Ken Davenport
Verified date: Jun 08, 2020
- 1 of 17
- next ›