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
Pollinator Week is June 20-26, 2022!
Butterflies and moths are accidental pollinators of many flowering plants. While most species do not have special structures to carry pollen, they do brush against pollen and transfer it to other flowers.
Did you know? The Eastern Tailed-Blue (Cupido comyntas) flies close to the ground and uses its short proboscis to probe flowers of wild strawberry, white sweet clover, and other low-lying plants.
Verified Sightings
Displaying 1 - 24 of 552 verified sightings
Observation date: Jun 20, 2022
Submitted by: bozze
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: Jun 21, 2022
Observation date: Mar 12, 2018
Submitted by: klmarshall
Region: Marin County, California, United States
Verified by: ishaan2009
Verified date: Jun 12, 2022
Observation date: Mar 20, 2018
Submitted by: lincolnsallen@g...
Region: San Mateo County, California, United States
Verified by: ishaan2009
Verified date: Jun 12, 2022
Observation date: Apr 03, 2018
Submitted by: IronHogRider
Region: Los Angeles County, California, United States
Verified by: ishaan2009
Verified date: Jun 12, 2022
Observation date: Apr 11, 2018
Submitted by: J.C.Gonzalez
Region: Tuolumne County, California, United States
Verified by: ishaan2009
Verified date: Jun 12, 2022
Observation date: Apr 28, 2018
Submitted by: sandraandtaylor...
Region: San Diego County, California, United States
Verified by: ishaan2009
Verified date: Jun 12, 2022
Observation date: Jan 08, 2019
Submitted by: Santee Carol
Region: San Diego County, California, United States
Verified by: mcduck
Verified date: Jun 06, 2022
Observation date: Apr 11, 2019
Submitted by: Mlevy13
Region: Napa County, California, United States
Verified by: mcduck
Verified date: Jun 05, 2022
Observation date: Apr 22, 2019
Submitted by: alwellwells
Region: Santa Cruz County, California, United States
Verified by: mcduck
Verified date: Jun 03, 2022
Observation date: Apr 26, 2019
Submitted by: Kristina65
Region: El Dorado County, California, United States
Verified by: mcduck
Verified date: Jun 03, 2022
Observation date: Apr 27, 2019
Submitted by: themotherload
Region: El Dorado County, California, United States
Verified by: mcduck
Verified date: Jun 03, 2022
Observation date: May 06, 2019
Submitted by: Laughinglara
Region: Nevada County, California, United States
Verified by: mcduck
Verified date: Jun 03, 2022
Observation date: May 12, 2019
Submitted by: Drmmrg
Region: Yuba County, California, United States
Verified by: mcduck
Verified date: Jun 01, 2022
Observation date: May 28, 2019
Submitted by: SidheSprite
Region: Humboldt County, California, United States
Verified by: mcduck
Verified date: May 31, 2022
Observation date: Apr 09, 2022
Submitted by: Suzy mack
Region: El Dorado County, California, United States
Verified by: mcduck
Verified date: May 30, 2022
Observation date: May 26, 2022
Submitted by: Vickie J Anderson
Region: Mason County, Washington, United States
Verified by: davidwdroppers
Verified date: May 29, 2022
Observation date: May 28, 2022
Submitted by: EmJCray0nEater
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 29, 2022
Observation date: May 25, 2022
Submitted by: LunariaNox
Region: Pierce County, Washington, United States
Verified by: davidwdroppers
Verified date: May 26, 2022
Observation date: May 22, 2022
Submitted by: Wondermoss
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 24, 2022
Observation date: May 18, 2022
Submitted by: Williedillo
Region: Riverside County, California, United States
Verified by: mcduck
Verified date: May 24, 2022
Observation date: May 01, 2022
Submitted by: JScarff
Region: Contra Costa County, California, United States
Verified by: ishaan2009
Verified date: May 14, 2022
Observation date: May 07, 2022
Submitted by: Tak7ics
Region: British Columbia, Canada
Verified by: davidwdroppers
Verified date: May 10, 2022
Observation date: Apr 04, 2022
Submitted by: Deantroi
Region: Sonoma County, California, United States
Verified by: ishaan2009
Verified date: May 02, 2022
Observation date: Apr 07, 2022
Submitted by: Jennuhhh
Region: Jackson County, Oregon, United States
Verified by: davidwdroppers
Verified date: Apr 08, 2022
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