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.
Comments: NULL
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Verified Sightings
Displaying 25 - 48 of 499 verified sightings
Observation date: May 04, 2021
Submitted by: Denise Lakin
Region: Pierce County, Washington, United States
Verified by: davidwdroppers
Verified date: May 04, 2021
Observation date: May 01, 2021
Submitted by: TylaJean
Region: Mason County, Washington, United States
Verified by: davidwdroppers
Verified date: May 03, 2021
Observation date: May 01, 2021
Submitted by: MrsLarson
Region: Whatcom County, Washington, United States
Verified by: davidwdroppers
Verified date: May 03, 2021
Observation date: Apr 15, 2021
Submitted by: MothWatchHyalop...
Region: Mason County, Washington, United States
Verified by: davidwdroppers
Verified date: Apr 17, 2021
Observation date: Apr 18, 2020
Submitted by: FriendOwl
Region: Lane County, Oregon, United States
Verified by: J_Martineau
Verified date: Apr 12, 2021
Observation date: Jul 26, 2017
Submitted by: thousandthjill
Region: Crook County, Oregon, United States
Verified by: davidwdroppers
Verified date: Mar 28, 2021
Observation date: Aug 03, 2017
Submitted by: datilson
Region: Lake County, Oregon, United States
Verified by: davidwdroppers
Verified date: Mar 28, 2021
Observation date: Aug 22, 2017
Submitted by: Evelina Yoder
Region: Josephine County, Oregon, United States
Verified by: davidwdroppers
Verified date: Mar 28, 2021
Observation date: Aug 07, 2020
Submitted by: 2WheelTravlr
Region: Deschutes County, Oregon, United States
Verified by: davidwdroppers
Verified date: Mar 28, 2021
Observation date: May 10, 2016
Submitted by: Elizabeth Branscum
Region: Klamath County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: May 15, 2015
Submitted by: techs
Region: Crook County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: May 05, 2017
Submitted by: DriBee
Region: Jefferson County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: May 27, 2017
Submitted by: dpcanni
Region: Deschutes County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: Jun 01, 2017
Submitted by: cntryguy775
Region: Klamath County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: May 29, 2017
Submitted by: Michele_mead
Region: Klamath County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: Jun 11, 2017
Submitted by: DavidPCraig
Region: Marion County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 17, 2021
Observation date: Apr 09, 2018
Submitted by: Cfarris72
Region: Clackamas County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: Apr 23, 2018
Submitted by: winterwoman
Region: Lane County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: May 15, 2018
Submitted by: prairiedaisy72
Region: Hood River County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: May 18, 2018
Submitted by: MJG
Region: Lane County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: May 22, 2018
Submitted by: ndmantei
Region: Grant County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: May 08, 2018
Submitted by: Brush_lady
Region: Grant County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: May 08, 2018
Submitted by: Brush_lady
Region: Grant County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
Observation date: May 26, 2019
Submitted by: earthtoannie
Region: Deschutes County, Oregon, United States
Verified by: J_Martineau
Verified date: Mar 14, 2021
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