Franck's sphinx
Sphinx franckii Neumoegen, 1893
Family: Sphingidae
Subfamily: Sphinginae
Identification: Forewing is gray along the costal half, yellowish brown on the rest of the wing; with black dashes and a black line along the outer margin. Hindwing is black with a narrow brown median band and base.
Wing Span: 3 15/16 - 5 1/16 inches (10 - 12.8 cm).
Life History: Females lay eggs singly on the host plant. Newly-hatched caterpillars eat at least part of their eggshells. Fully-grown caterpillars pupate in underground cells.
Flight: . One flight from June-July in the north, sometimes a partial second brood from August-September in the south.
Caterpillar Hosts: Elms (Ulmus) and ashes (Fraxinus).
Adult Food: Probably flower nectar.
Habitat: Not reported.
Range: New York south to northern Florida, west to Missouri and Louisiana.
Conservation: Not usually required.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
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Verified Sightings
Displaying 1 - 24 of 73 verified sightings
Observation date: Jul 02, 2014
Submitted by: brentsteury
Region: Fairfax County, Virginia, United States
Verified by: rogerdowner
Verified date: Jan 12, 2022
Observation date: Aug 15, 2020
Submitted by: jrgarris.sr
Region: Sussex County, New Jersey, United States
Verified by: curtis.lehman
Verified date: Oct 02, 2020
Observation date: Jul 08, 2020
Submitted by: Wade Wander
Region: Sussex County, New Jersey, United States
Verified by: curtis.lehman
Verified date: Sep 04, 2020
Observation date: Jul 09, 2019
Submitted by: jrgarris.sr
Region: Sussex County, New Jersey, United States
Verified by: curtis.lehman
Verified date: Jul 15, 2019
Observation date: Jun 27, 2019
Submitted by: Howell_Curtis
Region: Harrison County, Indiana, United States
Verified by: Howell_Curtis
Verified date: Jun 28, 2019
Observation date: Jun 11, 2018
Submitted by: cliffsmkia
Region: Van Buren County, Arkansas, United States
Verified by: stomlins701
Verified date: Jun 13, 2018
Observation date: Aug 15, 2015
Submitted by: TeaKH
Region: Lancaster County, Virginia, United States
Verified by: TeaKH
Verified date: Aug 28, 2015
Observation date: Aug 07, 2014
Submitted by: Doug Bruce
Region: Anderson County, Tennessee, United States
Verified by: Ken Childs
Verified date: Aug 08, 2014
Observation date: Jun 17, 2014
Submitted by: Ken Childs
Region: Chester County, Tennessee, United States
Verified by: Ken Childs
Verified date: Jun 29, 2014
Observation date: Jun 15, 2014
Submitted by: ShawnLane
Region: Brunswick County, North Carolina, United States
Verified by: rogerdowner
Verified date: Jun 15, 2014
Observation date: May 27, 2014
Submitted by: ShawnLane
Region: Brunswick County, North Carolina, United States
Verified by: rogerdowner
Verified date: May 27, 2014
Observation date: Aug 26, 2013
Submitted by: BarryMarsh
Region: Harford County, Maryland, United States
Verified by: rogerdowner
Verified date: Aug 26, 2013
Observation date: Jul 07, 2012
Submitted by: curtis.lehman (Steven Johnson)
Region: Pendleton County, West Virginia, United States
Verified by: curtis.lehman
Verified date: Jul 14, 2012
Observation date: Jul 06, 1962
Submitted by: curtis.lehman (Rick Gillmore)
Region: Washington County, Pennsylvania, United States
Verified by: curtis.lehman
Verified date: Feb 22, 2012
Observation date: Aug 01, 2011
Submitted by: curtis.lehman (Steven Shaffer)
Region: Perry County, Pennsylvania, United States
Verified by: curtis.lehman
Verified date: Sep 05, 2011
Observation date: Jul 11, 2005
Submitted by: rdhealy1951@aol.com
Region: Hart County, Kentucky, United States
Verified by: rogerdowner
Verified date: Feb 28, 2011
Observation date: Jul 03, 1989
Submitted by: legacy.reporter (Jeff Frey and Mervin Wenger)
Region: Lancaster County, Pennsylvania, United States
Verified by: curtis.lehman (Curt Lehman)
Verified date: Dec 31, 2010
Observation date: Jul 03, 1989
Submitted by: legacy.reporter (Jeff Frey and Mervin Wenger)
Region: Lancaster County, Pennsylvania, United States
Verified by: curtis.lehman (Curt Lehman)
Verified date: Dec 31, 2010
Observation date: unknown
Submitted by: BAMONA
Region:
Verified by: BAMONA
Verified date: Sep 06, 2010
Observation date: Jun 23, 1996
Submitted by: legacy.reporter (Smart, Glen)
Region: Cape Girardeau County, Missouri, United States
Verified by: Phillip E. Koenig (Phillip Koenig)
Verified date: Mar 11, 2009
Observation date: Jun 18, 1972
Submitted by: legacy.reporter (Reickard, Arnold)
Region: Clinton County, Missouri, United States
Verified by: legacy.verifier (Phillip Koenig; Heitzman, J.R.)
Verified date: Mar 11, 2009
Observation date: Aug 11, 1996
Submitted by: legacy.reporter (Smart, Glen)
Region: Cape Girardeau County, Missouri, United States
Verified by: Phillip E. Koenig (Phillip Koenig)
Verified date: Mar 11, 2009
Observation date: Jun 19, 1972
Submitted by: legacy.reporter (Reickard, Arnold)
Region: Clinton County, Missouri, United States
Verified by: legacy.verifier (Phillip Koenig; Heitzman, J.R.)
Verified date: Mar 11, 2009
Observation date: Jan 01, 1893
Submitted by: legacy.reporter (Franck, George)
Region: Jackson County, Missouri, United States
Verified by: Phillip E. Koenig (Phillip Koenig)
Verified date: Mar 11, 2009
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