Oslar's eacles
Eacles oslari Rothschild, 1907
Family: Saturniidae
Subfamily: Ceratocampinae
Identification: Upperside is yellow with purple-brown lines and cell spots. Males have an orange-brown form and females have a brownish form. Underside of both sexes has prominent brown bands on both wings; forewing band runs from the wing tip to the inner margin, hindwing band runs diagonally from the costa to the inner margin.
Wing Span: 4 7/16 - 5 3/4 inches (11.2 - 14.6 cm).
Life History: Egg laying begins after sunset and females deposit eggs singly or in groups of 2-6 on host plants. Caterpillars are solitary feeders, and when they are mature they pupate in underground burrows.
Flight: One flight from July-August.
Caterpillar Hosts: Mexican blue oak (Quercus oblongifolia), Emory oak (Q. emoryi), western soapberry (Sapindus saponaria drummondii) and others.
Adult Food: Adults do not feed.
Habitat: Oak woodland in the Sierra Madre.
Range: The Santa Rita, Patagonia, Atascosa, and Huachuca Mountains of southern Arizona south into Sonora, Sinaloa, and Chihuahua, Mexico.
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.
Get your BAMONA Gear!
Please donate!
We depend on donations to keep Butterflies and Moths of North America freely available. 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.
Advertise with us!
Do you have a product or service that you think would interest BAMONA users? If you would like to advertise on this website, contact us by email, or use the contact form and select the "Advertising" category.
Verified Sightings
Displaying 1 - 24 of 27 verified sightings
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/i001166_small.jpg?itok=u5bcslzZ)
Observation date: Jul 21, 2023
Submitted by: Tonia Graves
Region: Cochise County, Arizona, United States
Verified by: jwileyrains
Verified date: Jun 19, 2024
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/dscn8964.jpg?itok=d__wL7kw)
Observation date: Jul 17, 2022
Submitted by: J_Martineau
Region: Santa Cruz County, Arizona, United States
Verified by: J_Martineau
Verified date: Dec 08, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_2030.jpeg?itok=1DfXGYaE)
Observation date: Sep 03, 2022
Submitted by: richardb
Region: Cochise County, Arizona, United States
Verified by: jwileyrains
Verified date: Sep 07, 2022
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/dscn8626.jpg?itok=llTJc0gr)
Observation date: Jul 29, 2021
Submitted by: J_Martineau
Region: Santa Cruz County, Arizona, United States
Verified by: J_Martineau
Verified date: Dec 17, 2021
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/yellowsaturnid1.jpg?itok=EcTi3z84)
Observation date: Jul 26, 2013
Submitted by: GCSnelling
Region: Santa Cruz County, Arizona, United States
Verified by: kellyrichers
Verified date: Aug 18, 2016
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/moth_650.jpg?itok=Hfg9Povk)
Observation date: Aug 02, 2014
Submitted by: Carolyn Weaver
Region: Cochise County, Arizona, United States
Verified by: BAMONA
Verified date: Aug 18, 2014
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_0931_1.jpg?itok=2Uwkm-5g)
Observation date: Jul 20, 2014
Submitted by: nightwings8
Region: Santa Cruz County, Arizona, United States
Verified by: kellyrichers
Verified date: Jul 30, 2014
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/img_6007-1.jpg?itok=T3DZBsk-)
Observation date: Aug 04, 2013
Submitted by: Mike Rosengarten
Region: Pima County, Arizona, United States
Verified by: kellyrichers
Verified date: Feb 12, 2014
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/dscn0790.jpg?itok=GNCzfihN)
Observation date: Sep 06, 2013
Submitted by: Elyana Perez
Region: Sonora, Mexico
Verified by: stomlins701
Verified date: Jan 12, 2014
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/dscn4456.jpg?itok=C5paeXIV)
Observation date: Oct 14, 2012
Submitted by: Apoyo
Region: Masaya, Nicaragua
Verified by: stomlins701
Verified date: Oct 29, 2013
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/dsc_0227_01.jpg?itok=yqJBlns1)
Observation date: Aug 19, 2013
Submitted by: amalia
Region: Michoacán, Mexico
Verified by: stomlins701
Verified date: Oct 29, 2013
![](https://www.butterfliesandmoths.org/sites/default/files/styles/bamona_scale_and_crop_640px_by_640px/public/bamona_images/2814_06.jpg?itok=Tvij_65Y)
Observation date: unknown
Submitted by: BAMONA
Region:
Verified by: BAMONA
Verified date: Sep 06, 2010
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Jul 27, 1972
Submitted by: legacy.reporter (Michael J. Smith)
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Jul 15, 1979
Submitted by: legacy.reporter (George J. Balogh)
Region: Cochise County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Jul 29, 1986
Submitted by: legacy.reporter (James P. Tuttle)
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Jul 24, 1971
Submitted by: legacy.reporter (Kenneth C. Hansen)
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Jul 29, 1983
Submitted by: legacy.reporter (James P. Tuttle)
Region: Pima County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Jul 31, 1989
Submitted by: legacy.reporter (Clifford D. Ferris)
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Aug 03, 2005
Submitted by: legacy.reporter (Kelly Richers & Ken Bliss)
Region: Cochise County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Aug 01, 1988
Submitted by: legacy.reporter (Clifford D. Ferris)
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: Sep 04, 1971
Submitted by: legacy.reporter (Kenneth C. Hansen)
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: unknown
Submitted by: legacy.reporter
Region: Sinaloa, Mexico
Verified by: legacy.verifier
Verified date: Dec 31, 2004
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: unknown
Submitted by: legacy.reporter
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
![](/sites/default/files/no-image-icon-480x360.png)
Observation date: unknown
Submitted by: legacy.reporter
Region: Sonora, Mexico
Verified by: legacy.verifier
Verified date: Dec 31, 2004
- 1 of 2
- next ›