Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Species Amphion floridensis - Nessus Sphinx - Hodges#7873

Is this what is sometimes called a Jar Fly? - Amphion floridensis ? Nessus Sphinx caterpillar, last instar - Amphion floridensis Amphion floridensis Nessus Sphinx - Hodges#7873 (Amphion floridensis)? - Amphion floridensis Moth on spiderwort - Amphion floridensis Amphion floridensis Nessus Sphinx - Amphion floridensis Amphion floridensis
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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 Macroglossinae
Tribe Macroglossini
Genus Amphion
Species floridensis (Nessus Sphinx - Hodges#7873)
Hodges Number
Synonyms and other taxonomic changes
Amphion floridensis Clark, 1920
First described in 1777 by Pieter Cramer as Sphinx nessus. This name was invalid, because Dru Drury had already used it for another species in 1773. Both Cramer's and Drury's "Sphinx nessus" were moved to different genera, but that makes no difference as far as the rules are concerned.
The only valid name available as a replacement is floridensis, which B.P. Clark had used in 1920 to describe a proposed subspecies.
Amphion nessus
Amphion nesus
Amphion floridensis
Wingspan 37-55 mm.(1)
e. NA, west to Alberta - Map (MPG),(1)
Adults fly April-July in the north, 2 broods in the south (1)
Larvae feed on Ampelopsis, grape, and cayenne pepper. Adults nectar at flowers during the day and at dusk:
Life Cycle
Egg, larvae, pupa, and adult:

Caterpillars pupate in shallow underground chambers.
Covell notes that this was formerly known as A. nessus and calls it A. floridensis (1), but the more recent Arnett still reflects A. nessus (2).
Print References
Covell (1)
Internet References
De uitlandische Kapellen, v.2, p.16 - Pieter Kramer's original description of the species (in Dutch and French). 2 pages before, on Plate CVII/107, fig.D, is an illustration of the adult moth.
Proceedings of the New England Zoölogical Club,v.7, p.73 - Clark's description, which is the first use of the name floridensis for this species.