Big poplar sphinx
Pachysphinx occidentalis (Hy. Edwards, 1875)
Family: Sphingidae
Subfamily: Sphinginae
Identification: Two color forms exist. Upperside of wings is yellow brown in the pale form, dark gray in the dark form. Lines and bands are well-defined. Hindwing has a crimson patch covering varying amounts of the wing, and 2 dark lines which do not form a distinct triangle.
Wing Span: 5 1/8 - 5 7/8 inches (13 - 15 cm).
Life History: Females lay eggs on leaves of the hosts. Fully-grown caterpillars pupate and overwinter in shallow burrows in the ground.
Flight: . Two broods in southern Arizona from May-September, one brood northward from June-August.
Caterpillar Hosts: Cottonwood and poplar (Populus) and willow (Salix).
Adult Food: Adults do not feed.
Habitat: Riparian areas and suburbs.
Range: North Dakota west to eastern Washington; south to Texas, southern California, and Baja California Norte.
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 145 - 168 of 282 verified sightings
Observation date: Jun 01, 2007
Submitted by: dave priestley (David I. Priestley)
Region: Ontario, Canada
Verified by: dave priestley (David Priestley)
Verified date: Dec 31, 2010
Observation date: unknown
Submitted by: BAMONA
Region:
Verified by: BAMONA
Verified date: Sep 06, 2010
Observation date: unknown
Submitted by: dave priestley (David Priestley)
Region: Ontario, Canada
Verified by: BAMONA
Verified date: Sep 06, 2010
Observation date: Jul 20, 2009
Submitted by: legacy.reporter (Caroline Stafford)
Region: Pennington County, South Dakota, United States
Verified by: legacy.verifier (Gary Marrone)
Verified date: Aug 18, 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: Aug 05, 2002
Submitted by: legacy.reporter (B/B)
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 (Thomas W. Carr)
Region: Cochise County, Arizona, United States
Verified by: legacy.verifier (The Lepidopterists' Society Season Summary)
Verified date: Jan 28, 2009
Observation date: Aug 01, 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: Jul 04, 1980
Submitted by: legacy.reporter (Rich Cowan)
Region: Murray County, Minnesota, United States
Verified by: Tom Middagh (Tom Middagh)
Verified date: Jul 10, 2008
Observation date: Jun 08, 2008
Submitted by: legacy.reporter (Mitch Marcotte)
Region: Clay County, South Dakota, United States
Verified by: Tom Middagh (Tom Middagh)
Verified date: Jul 10, 2008
Observation date: Jun 29, 1996
Submitted by: legacy.reporter (Tom Dimock)
Region: Ventura County, California, United States
Verified by: legacy.verifier (Tom Dimock)
Verified date: May 24, 2007
Observation date: Jun 26, 2005
Submitted by: legacy.reporter (Martin Trac)
Region: Riverside County, California, United States
Verified by: paulopler (Paul Opler)
Verified date: Jun 23, 2006
Observation date: unknown
Submitted by: legacy.reporter
Region: Box Elder County, Utah, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Jefferson County, Colorado, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Brewster County, Texas, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Iron County, Utah, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Greenlee County, Arizona, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Latah County, Idaho, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Washington County, Utah, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Alpine County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Burt County, Nebraska, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Spokane County, Washington, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Los Angeles County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Torrance County, New Mexico, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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