Pseudosphinx is a monotypic moth genus in the family Sphingidae first described by Hermann Burmeister in 1856.

It is native to the tropical and subtropical Americas from the southern and southwestern United States to Brazil.

Toward the posterior end is an orange bump with a black horn roughly 2 centimeters long.

It has been recorded on Madagascar periwinkle (Catharanthus roseus) and pequi (Caryocar brasiliense).

[2] It has been observed as a pollinator of the fringed star orchid (Epidendrum ciliare) in Puerto Rico.

The caterpillar is also coated in barbed urticating hairs, which stick deeply in skin and cause irritation.

Each caterpillar can consume three large leaves per day, and it will continue eating into the branches if it finishes the available foliage.