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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 337 - 360 of 795 verified sightings
Observation date: Aug 12, 2012
Submitted by: slik50
Region: Alberta, Canada
Verified by: Josiah Gilbert
Verified date: Sep 16, 2013
Observation date: Aug 28, 2013
Submitted by: peteraharrisdds
Region: Kent County, Michigan, United States
Verified by: designandsound13
Verified date: Sep 14, 2013
Observation date: Aug 26, 2013
Submitted by: JoleneFinnie
Region: Ontario, Canada
Verified by: rogerdowner
Verified date: Sep 02, 2013
Observation date: Jul 30, 2013
Submitted by: m5vandersloo
Region: Crawford County, Michigan, United States
Verified by: designandsound13
Verified date: Aug 26, 2013
Observation date: Jun 26, 2013
Submitted by: Brett Budach
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Aug 19, 2013
Observation date: Jul 07, 2013
Submitted by: hbjul
Region: Deschutes County, Oregon, United States
Verified by: Robert Martin
Verified date: Aug 18, 2013
Observation date: Aug 07, 2013
Submitted by: jkerickson
Region: Grant County, Washington, United States
Verified by: davidwdroppers
Verified date: Aug 14, 2013
Observation date: Jul 28, 2013
Submitted by: MonicaSavage
Region: Ontario, Canada
Verified by: rogerdowner
Verified date: Aug 13, 2013
Observation date: Jul 16, 2013
Submitted by: kr1f333
Region: Manistee County, Michigan, United States
Verified by: elsner
Verified date: Aug 09, 2013
Observation date: Jul 06, 2013
Submitted by: GoosebNat
Region: Lake County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Jul 30, 2013
Observation date: Jul 15, 2013
Submitted by: Katherine Stahl
Region: Dunn County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Jul 30, 2013
Observation date: Jul 29, 2013
Submitted by: gwenmartella
Region: Ontario, Canada
Verified by: Jim Edsall
Verified date: Jul 30, 2013
Observation date: Jul 11, 2013
Submitted by: bkruse1950
Region: Mason County, Michigan, United States
Verified by: elsner
Verified date: Jul 30, 2013
Observation date: Jul 25, 2013
Submitted by: Schoobs
Region: Wood County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Jul 30, 2013
Observation date: Jul 08, 2013
Submitted by: hroo
Region: Washington County, Vermont, United States
Verified by: Ryan St Laurent
Verified date: Jul 30, 2013
Observation date: Jul 15, 2013
Submitted by: Amy Langman
Region: Susquehanna County, Pennsylvania, United States
Verified by: curtis.lehman
Verified date: Jul 23, 2013
Observation date: Jul 23, 2013
Submitted by: jpapp
Region: Mecklenburg County, North Carolina, United States
Verified by: rogerdowner
Verified date: Jul 23, 2013
Observation date: Jul 18, 2013
Submitted by: bdmaxie
Region: St. Louis County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Jul 21, 2013
Observation date: Jul 05, 2013
Submitted by: aarongunnar
Region: Florence County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Jul 19, 2013
Observation date: Jul 15, 2013
Submitted by: Aboover
Region: Knox County, Maine, United States
Verified by: anthony.thomas
Verified date: Jul 16, 2013
Observation date: Jul 10, 2013
Submitted by: ccrosby98
Region: Spokane County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 12, 2013
Observation date: Jun 30, 2013
Submitted by: sparkle_colors13
Region: Dakota County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Jul 07, 2013
Observation date: Jul 04, 2013
Submitted by: Mnbound
Region: Pine County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Jul 07, 2013
Observation date: Jul 03, 2013
Submitted by: shimmerhawk
Region: St. Louis County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Jul 07, 2013
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