Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Interested in a 2022 BugGuide gathering in New Mexico?

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events


TaxonomyBrowse
Info
ImagesLinksBooksData

Species Sphinx franckii - Franck's Sphinx - Hodges#7808

Pretty Moth - Sphinx franckii Sphinx franckii Franck's Sphinx, Sphinx franckii - Sphinx franckii Sphinx franckii - male Franck's Sphinx? - Sphinx franckii Francks sphinx  - Sphinx franckii Sphinx franckii? - Sphinx franckii Francks sphinx - Sphinx franckii
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Bombycoidea (Silkworm, Sphinx, and Royal Moths)
Family Sphingidae (Sphinx Moths)
Subfamily Sphinginae
Tribe Sphingini
Genus Sphinx
Species franckii (Franck's Sphinx - Hodges#7808)
Hodges Number
7808
Synonyms and other taxonomic changes
Sphinx franckii Neumoegen, 1893
Explanation of Names
Named in honor of Brooklyn entomologist George Franck (1839-1923).
Size
Wingspan 10-12.8 cm.
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.
Range
e US - Map (MPG)
Holotype male: Kansas City, Missouri (from the collection of George Franck).
Season
One flight from June-July in the north, sometimes a partial second brood from August-September in the south.
Food
Larval hosts hosts are primarily elm (Ulmus) and ash (Fraxinus). Also recorded on California privet (Ligustrum ovalifolium). (1) Adults take nectar.
Life Cycle
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.
Remarks
Uncommon and northern populations are in decline (Wagner, 2012). (2)
See Also
Sphinx kalmiae
Print References
Neumoegen, B., 1893. Description of a new Sphinx and some notes on S. coloradus Smith. Entomological News, and proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia 4: 133.
Smyth, E.A., 1912. Description of the larva and first bred specimens of Sphinx (Hyloicus) franckii Neum. (Lepid.). Entomological news, and proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia 23: 9-12; Pl.2.
Wagner, D.L., 2012. Moth decline in the northeastern United States. News of the Lepidopterists’ Society 54: 52–56.