Paratrea is a monotypic moth genus in the family Sphingidae erected by Augustus Radcliffe Grote in 1903.

Its sole species, Paratrea plebeja, commonly known as the plebeian sphinx moth, was first described by Johan Christian Fabricius in 1777.

In the southern regions, there are at least two generations, with adults on the wing from late April to June and from August to October.

Adults feed on the nectar of various flowers, including Saponaria officinalis, Phlox, Petunia, Mirabilis, Lonicera, Hymenocallis occidentalis and Verbena.

The larvae feed on plants such as Campsis radicans, Tecoma stans, and introduced Tecomaria capensis.