The adults are quite similar to those of the related and larger genus Hyles.
The forewing upperside is similar to Theretra manilae but the area between the fifth and sixth postmedian lines is strongly divergent over the posterior half of the wing so that they are widely separated on the inner margin, the area between them largely filled with olive-green or brown, forming a wedge-shaped band similar to that in Hyles species.
Matthew Barnett, while discussing his work at an inner-city Los Angeles ministry, explained how he learned from Jack Hyles.