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Genus Amorpha

Amorpha juglandis - male Walnut Sphinx Moth - Amorpha juglandis First instar walnut sphinx - Amorpha juglandis Fifth instar walnut sphinx - Amorpha juglandis Walnut sphinx 2nd or third instar, molting - Amorpha juglandis Amorpha juglandis - Hodges #7827 - Amorpha juglandis Sphingidae, Walnut Sphinx, lateral - Amorpha juglandis Moths mating - Amorpha juglandis - male - female
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
No Taxon (Moths)
Superfamily Bombycoidea
Family Sphingidae (Sphinx Moths)
Subfamily Smerinthinae
Tribe Smerinthini
Genus Amorpha
Synonyms and other taxonomic changes
Amorpha Hübner, 1809. Taxonomic notes:
formerly Cressonia - see Remarks section below
Numbers
1 species in North America, listed as Amorpha juglandis at All-Leps, and as Laothoe juglandis at Nearctica.com
Remarks
The type species of Amorpha Hubner, 1809 is juglandis; the species was originally placed in the genus Sphinx.

The type species of Laothoe is populi, an Old World species originally placed in the genus Sphinx. Laothoe is an Old World genus that apparently does not occur in North America. (the "Amorpha" referred to in the previous two links was Hubner's rejected name for the Old World Sphinx populi in 1806, not Hubner's accepted name for the North American Sphinx juglandis in 1809).

The listing of a "Laothoe juglandis" on many web sites is presumably an error, as the species juglandis has never been formally placed in the genus Laothoe, according to the synonym history shown at FUNET.
Internet References
pinned adult image of A. juglandis (CBIF)
classification of Cressonia as a junior synonym of Amorpha Hubner, 1809 (Butterflies and Moths of the World)