The flower is white to pink or purple, sometimes with mottling or lines of spots in the throat, and often a purple blotch on the upper lip.

The most distinctive features of this species are its three-cusped teeth, the white blotch at the aft base of its first dorsal fin, and the two pairs of lateral keels on its tail.

The mine has the form of a blotch mine on the upperside of the leaf.

The mine has the form of a large upperside blotch mine.

One broader dark blotch is located on middle of the straight section of the lateral line.

The mine has the form of a wide upperside linear mine expanding into a white blotch, usually obliterating the early mine.

The operculum has a small black blotch on the upper margin.

Each blotch is usually edged with black.

The leaf blades often have a dark-coloured blotch in the centre and are lanceolate or narrowly elliptical and have entire margins.

The mine has the form of a digitate blotch under the upper epidermis along the midrib or lateral rib.

The larva, of the cylindrical type in the later stages, enters the leaf on the lower surface, and makes a narrow linear mine, then cuts through the parenchyma to the upper side, where the mine broadens into an elongate blotch, made tent-like by a longitudinal ridge in each epidermis.

The mine starts as a wandering narrow gallery and then an irregularly shaped blotch under the upper cuticle of the leaf.

The mine has the form of a large, transparent, upper-surface blotch.

There is a subapical blotch running from the middle of the costal margin to before the apex.