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.
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Verified Sightings
Displaying 1 - 24 of 26 verified sightings
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
Observation date: Sep 03, 2022
Submitted by: richardb
Region: Cochise County, Arizona, United States
Verified by: jwileyrains
Verified date: Sep 07, 2022
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
Observation date: Jul 26, 2013
Submitted by: GCSnelling
Region: Santa Cruz County, Arizona, United States
Verified by: kellyrichers
Verified date: Aug 18, 2016
Observation date: Aug 02, 2014
Submitted by: Carolyn Weaver
Region: Cochise County, Arizona, United States
Verified by: BAMONA
Verified date: Aug 18, 2014
Observation date: Jul 20, 2014
Submitted by: nightwings8
Region: Santa Cruz County, Arizona, United States
Verified by: kellyrichers
Verified date: Jul 30, 2014
Observation date: Aug 04, 2013
Submitted by: Mike Rosengarten
Region: Pima County, Arizona, United States
Verified by: kellyrichers
Verified date: Feb 12, 2014
Observation date: Sep 06, 2013
Submitted by: Elyana Perez
Region: Sonora, Mexico
Verified by: stomlins701
Verified date: Jan 12, 2014
Observation date: Aug 19, 2013
Submitted by: amalia
Region: Michoacán, Mexico
Verified by: stomlins701
Verified date: Oct 29, 2013
Observation date: Oct 14, 2012
Submitted by: Apoyo
Region: Masaya, Nicaragua
Verified by: stomlins701
Verified date: Oct 29, 2013
Observation date: unknown
Submitted by: BAMONA
Region:
Verified by: BAMONA
Verified date: Sep 06, 2010
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
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
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
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
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
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
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
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
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
Observation date: unknown
Submitted by: legacy.reporter
Region: Pima County, Arizona, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Sinaloa, Mexico
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Santa Cruz County, Arizona, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Sonora, Mexico
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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