Walnut Sphinx

Amorpha juglandis

"Amorpha" is a monotypic moth genus in the family Sphingidae erected by Jacob Hübner in 1809. Its only species, "Amorpha juglandis", the walnut sphinx, was first described by James Edward Smith in 1797.
Amorpha juglandis Larval host plants include Walnut, Butternut, Hickory, Alder, and Beech. Amorpha juglandis,Geotagged,Sphinx moth,Spring,United States,Walnut sphinx,moth

Appearance

The wingspan is 45–75 mm.
Walnut sphinx moth Observed on railing post, outside home in north Texas where it has remained for an entire day. 7-13-25. Olympus EM-1 mk2 and 12-60 lens. Amorpha juglandis,Walnut sphinx

Distribution

It is native to North America, where it is distributed from the Atlantic Ocean to the Rocky Mountains in Canada and the United States.
Walnut Sphinx (Amorpha juglandis) On a chert trail at the edge of a dense mixed forest (near hickory trees). It was being attacked by ants, so I relocated it to a better place. I'm not sure if it will survive, but I gave it my best shot! Amorpha juglandis,Geotagged,Moth Week,Moth Week 2020,National Moth Week,Summer,United States,Walnut sphinx,moth,moths

Behavior

The adult moth is nocturnal, active mainly during the early hours of the night.

The caterpillar feeds on alder, hickory, hazelnut, beech, walnut, and hop-hornbeam species. When attacked by a bird, the caterpillar produces a high-pitched whistle by expelling air from pair of spiracles in its abdomen. This antipredator adaptation may startle the bird, which may then reject the caterpillar.

References:

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Status: Unknown
EX EW CR EN VU NT LC
Taxonomy
KingdomAnimalia
DivisionArthropoda
ClassInsecta
OrderLepidoptera
FamilySphingidae
GenusAmorpha
SpeciesA. juglandis
Photographed in
United States of America