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This leafhopper has green hemelytra with light green veins, the prothorax is green posteriorally and yellow anteriorally, its head and undersides are yellow and its face is pale yellow (Beirne 1956). Markings on the head are lighter than in D. noveboracensis or D. prasina, with a narrow brown stripe between the eye and the suture (Nielson 1968). There are no large black spots at the apex of the vertex. The head is longer than that of D. noveboracensis and the apex of the vertex is more sharply pointed. Compared to D. angulifera, the head is more triangular and not as broad between the eyes. The antennae may be flattened and expanded in some specimens (Beirne 1956). The shaft of the aedeagus is nearly square in the ventral aspect, and dorsally has a broad tooth-like process (Nielson 1968).

Draeculacephala crassicornis is a competent vector of Pierce’s Disease of grapes, but not an economically important one (Nielson 1968). Pierce’s Disease is now known to be caused by the bacterium Xylella fastidiosa, which is also implicated in dwarfing in alfalfa (Serio et al. 2019).