Proserpinus terlooi

Proserpinus terlooi (Terloo sphinx moth) is a moth of the family Sphingidae. It is found from southern Arizona to Sonora in Mexico.

The wingspan is 42–48 mm. The forewing upperside is nearly uniformly greyish-green with a darker green median band. The hindwing upperside has a reddish basal area and a greyish marginal band.

There is one generation per year with adults on wing in July and August. Adults fly during the very late afternoon or evening, nectaring from flowers.

The larvae feed on Boerhavia species (including Boerhavia coccinea and Boerhavia coulteri). There are at least three colour morphs, ranging from very pale green to slightly darker green and a mottled brown and gray pattern.