Greenhouse whitefly adults have a yellow body and white powdery wings which are held almost parallel to the body. The wings overlap and form a heart shape, and obscure the body when viewed from above. Nymphs are pale yellow-green with long hairs on the body. The nymphs are flat and scale-like. The pupa have no waxy filaments or fringe round the edge. Greenhouse whitefly adults are larger than the similar silverleaf whitefly (bemisia tabaci) which has wings that do not meet at the center, so from above the body can be seen between the wings.