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Modest sphinx
Pachysphinx modesta (Harris, 1839)
Family: Sphingidae
Subfamily: Sphinginae
Identification: Upperside of forewing is gray with the basal third lighter; sometimes the outer third also is light, leaving just the median band dark. Upperside of hindwing is gray with a crimson patch and an inward-pointing blue-black triangle near the outer margin.
Wing Span: 3 - 4 11/16 inches (7.6 - 12 cm).
Life History: Females lay eggs on leaves of the hosts, and the eggs hatch in about 9 days. Fully-grown caterpillars pupate and overwinter in shallow burrows in the ground.
Flight: . One brood in the north from June-July, two broods in the south from May-September.
Caterpillar Hosts: Poplar, aspen, and cottonwood (Populus) and willow (Salix).
Adult Food: Adults do not feed.
Habitat: Riparian areas and moist mountainsides.
Range: Maine south to north Florida; west to Washington, Oregon, Utah, New Mexico, and Texas. Also 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 361 - 384 of 795 verified sightings
Observation date: Jul 04, 2013
Submitted by: Heddylee123
Region: Chautauqua County, New York, United States
Verified by: Ryan St Laurent
Verified date: Jul 06, 2013
Observation date: Jul 01, 2013
Submitted by: Jody
Region: Ontario, Canada
Verified by: curtis.lehman
Verified date: Jul 01, 2013
Observation date: Jun 03, 2013
Submitted by: mjhoy
Region: Washington County, Vermont, United States
Verified by: Ryan St Laurent
Verified date: Jun 30, 2013
Observation date: Jun 15, 2013
Submitted by: davmcnaugh
Region: Forest County, Pennsylvania, United States
Verified by: curtis.lehman
Verified date: Jun 30, 2013
Observation date: Jun 22, 2013
Submitted by: stonehollow
Region: Wright County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Jun 28, 2013
Observation date: Jul 27, 2010
Submitted by: groehm
Region: Van Wert County, Ohio, United States
Verified by: rogerdowner
Verified date: Jun 27, 2013
Observation date: Jun 19, 2013
Submitted by: trever
Region: Marathon County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Jun 22, 2013
Observation date: Jun 18, 2013
Submitted by: bloort
Region: Saskatchewan, Canada
Verified by: Tom Middagh
Verified date: Jun 21, 2013
Observation date: Jun 14, 2013
Submitted by: Valendaria
Region: Lewis County, New York, United States
Verified by: Ryan St Laurent
Verified date: Jun 16, 2013
Observation date: Jun 15, 2013
Submitted by: markshetka@gmail.com
Region: St. Louis County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Jun 15, 2013
Observation date: Jun 13, 2013
Submitted by: crea
Region: Minnesota, United States
Verified by: Tom Middagh
Verified date: Jun 15, 2013
Observation date: Jun 04, 2013
Submitted by: BarbSendelbach
Region: Sussex County, New Jersey, United States
Verified by: Ryan St Laurent
Verified date: Jun 07, 2013
Observation date: Jun 04, 2013
Submitted by: tcjeep
Region: Allen County, Indiana, United States
Verified by: rogerdowner
Verified date: Jun 06, 2013
Observation date: Jun 02, 2013
Submitted by: Odonatanna
Region: Chemung County, New York, United States
Verified by: Ryan St Laurent
Verified date: Jun 03, 2013
Observation date: Jun 02, 2013
Submitted by: Scotiaspinner
Region: Nova Scotia, Canada
Verified by: anthony.thomas
Verified date: Jun 03, 2013
Observation date: May 31, 2013
Submitted by: Teacherchick27
Region: Tolland County, Connecticut, United States
Verified by: Ryan St Laurent
Verified date: Jun 01, 2013
Observation date: May 30, 2013
Submitted by: lorijc2
Region: Ontario, Canada
Verified by: rogerdowner
Verified date: May 30, 2013
Observation date: Jun 20, 2012
Submitted by: jeremy_martin@m...
Region: Allegany County, New York, United States
Verified by: Ryan St Laurent
Verified date: Apr 27, 2013
Observation date: Jul 12, 2007
Submitted by: cheins
Region: Billings County, North Dakota, United States
Verified by: Tom Middagh
Verified date: Apr 24, 2013
Observation date: Jul 10, 2002
Submitted by: curtis.lehman (Paul Dennehy)
Region: Columbia County, Pennsylvania, United States
Verified by: curtis.lehman
Verified date: Feb 10, 2013
Observation date: Jun 16, 2009
Submitted by: Lula Field
Region: Franklin County, Massachusetts, United States
Verified by: rogerdowner
Verified date: Jan 24, 2013
Observation date: Jul 08, 2012
Submitted by: Lula Field
Region: Worcester County, Massachusetts, United States
Verified by: rogerdowner
Verified date: Jan 24, 2013
Observation date: Jun 24, 2009
Submitted by: tjantscher
Region: Boone County, Iowa, United States
Verified by: jamesdurbin
Verified date: Jan 14, 2013
Observation date: Jul 05, 2012
Submitted by: trever
Region: Marathon County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Dec 18, 2012
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