About Aplus dorbignyi (Payraudeau, 1826)
Aplus dorbignyi (Payraudeau, 1826) has a shell that ranges in size from 10 mm to 20 mm. The shell is quite variable in pattern and shape, and is usually quite elongated with strong axial ribs. It has a brown or yellowish background with paler nodules and one or two suprasutural white bands along its spirals, and the interior of the shell is white. The shell is ovate and subfusiform, with a pointed summit. It is made up of eight very distinct, slightly swollen whorls, which are ridged lengthwise by several subnodulous folds, and also covered by transverse striae and ridges. The aperture is ovate and violet, edged with reddish color, and narrowed at its base. The outer lip is deeply furrowed on the inside. The columella is nearly straight and subgranular, and only rarely has a distinct fold at the base. The general color of the shell is brown, varied with fawn color, with a white zone at the base of each whorl, and a broader decurrent band towards the middle of the body whorl. This species is found in European waters, the Mediterranean Sea, the Red Sea, and the Atlantic Ocean off the coast of Mauritania. It lives under rocks at low tide.
