They have very short petioles and velvety undersides. The undersides of the wings are paler. Pampas deers have tan fur, lighter on their undersides and insides of legs. The name white ash derives from the glaucous undersides of the leaves. Plants commonly have hairy veins on the undersides of the foliage. A slight ochreous shade is visible on the undersides of the flanks. Whiteflies are Hemipterans that typically feed on the undersides of plant leaves. Generally, the forelegs have no black pigmentation on their undersides. There are corky warts on the pale undersides of the leaves. The undersides of the cephalothorax and the abdomen are both solid black. Purple spots may also appear on the leaf undersides. Males have blue-grey wings with black spots and white undersides with black barring. It has orange feathers on the undersides of its wings. The spots on the undersides of leaf are the fungus itself. The former causes brown spots with definite margins on the undersides of the leaf.