Xylophanes belti is a moth of the family Sphingidae. It is known from Mexico, Nicaragua, Costa Rica, Belize, Honduras, Guatemala, and Panama, per Albert Thurman who has collected this species at Finca Hartmann in Chiriqui Province since the mid-1970's and as recently as July 2016. Adults are on wing year round in Costa Rica. The larvae possibly feed on Psychotria panamensis, Psychotria nervosa and Pavonia guanacastensis.