Gnathothlibus collardi is a moth of the family Sphingidae. It is a hybrid between a female Philodila astyanor and a male Gnathothlibus eras. It is known from Tahiti.
The length of the forewings is about .
Gnathothlibus collardi was described as a species, but by combining barcodes, morphology and a nuclear marker, research has shown that it is actually an F1 hybrid between two closely related species.[1]