Ceanothus silkmoth
Hyalophora euryalus (Boisduval, 1855)
Family: Saturniidae
Subfamily: Saturniinae
Identification: Wings are red to brownish red. Areas outside the narrow white postmedian lines are also red to brownish red, but may have black overscaling. Cell spot on the hindwing is shaped like an elongated comma and touches or breaks the postmedian line.
Wing Span: 3.5 - 5 inches (8.9 - 12.7 cm).
Life History: Females glue eggs singly or in clumps on leaves of the host plant. The eggs hatch in 9-14 days and the caterpillars eat leaves. The cocoon is spun in the outer part of the host plant and is attached to a twig by only one-half its length.
Flight: One brood from January-July depending on altitude and seasonal variation.
Caterpillar Hosts: A wide range of plants including buckbrush (Ceanothus), manzanita (Arctostaphylos), gooseberry (Ribes), madrone (Arbutus menziesii), willows (Salix), alder (Alnus), and mountain mahogany (Cercocarpus betuloides).
Adult Food: Adults do not feed.
Habitat: A wide variety of habitats including coastal areas, chaparral, and conifer forests.
Range: British Columbia east to western Montana, south through Washington, western Oregon, and California to Baja California Sur.
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.
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Verified Sightings
Displaying 193 - 216 of 632 verified sightings
Observation date: Jun 30, 2020
Submitted by: sophieee27
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Jul 01, 2020
Observation date: May 31, 2020
Submitted by: HeatherPiercy1970
Region: Spokane County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 01, 2020
Observation date: May 28, 2020
Submitted by: Superjens
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 30, 2020
Observation date: May 26, 2020
Submitted by: Laura barnes
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 28, 2020
Observation date: May 26, 2020
Submitted by: jimmynhannah
Region: Bonner County, Idaho, United States
Verified by: J_Martineau
Verified date: May 28, 2020
Observation date: May 24, 2020
Submitted by: cfriend
Region: Thurston County, Washington, United States
Verified by: davidwdroppers
Verified date: May 24, 2020
Observation date: May 18, 2020
Submitted by: StephClark87
Region: Lincoln County, Montana, United States
Verified by: davidwdroppers
Verified date: May 18, 2020
Observation date: May 13, 2020
Submitted by: Erica S
Region: Ravalli County, Montana, United States
Verified by: davidwdroppers
Verified date: May 16, 2020
Observation date: Apr 29, 2020
Submitted by: Ken Walker
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 16, 2020
Observation date: May 12, 2020
Submitted by: Mmountainmann
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 13, 2020
Observation date: Apr 22, 2020
Submitted by: JoeEllisSeattle
Region: King County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 22, 2020
Observation date: Apr 17, 2020
Submitted by: sslape91
Region: Cowlitz County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 17, 2020
Observation date: Jul 02, 2019
Submitted by: J_Martineau
Region: Missoula County, Montana, United States
Verified by: J_Martineau
Verified date: Dec 05, 2019
Observation date: Jun 08, 2019
Submitted by: Picea
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Aug 17, 2019
Observation date: Jun 12, 2019
Submitted by: SetecAstronomy71
Region: Missoula County, Montana, United States
Verified by: davidwdroppers
Verified date: Jun 14, 2019
Observation date: Jun 13, 2019
Submitted by: julianajean
Region: Flathead County, Montana, United States
Verified by: davidwdroppers
Verified date: Jun 14, 2019
Observation date: Jun 09, 2019
Submitted by: Zach Eckert
Region: Chelan County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 10, 2019
Observation date: Jun 05, 2019
Submitted by: terifink
Region: Chelan County, Washington, United States
Verified by: davidwdroppers
Verified date: Jun 05, 2019
Observation date: May 29, 2019
Submitted by: bobscafe
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 31, 2019
Observation date: May 30, 2019
Submitted by: Trixie Sylvester
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 30, 2019
Observation date: May 22, 2019
Submitted by: Gunkers
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 28, 2019
Observation date: May 23, 2019
Submitted by: CascadiaLangford
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 24, 2019
Observation date: May 05, 2019
Submitted by: Renren
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 18, 2019
Observation date: May 11, 2019
Submitted by: SFranzel84
Region: Chelan County, Washington, United States
Verified by: davidwdroppers
Verified date: May 13, 2019
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