Tetrastemma lophoheliae Bergendal, 1903

Length up to 3 cm, width around 1 mm. Colour usually pale yellowish, beige or orange, occasionally bright red. Head well-defined, dorsoventrally flattened and diamond-shaped. Head wider than body. Four relatively large eyes arranged in a square. Anterior pair larger than posterior pair. The two pairs of furrows are pale and distinct. Associated with corals.