Berthellina_citrina

Medium sized species found under rocks. The general shape is oval, with a flattened oral veil and the rhinophores are folded. The overall colour is a pale yellow to yellow-orange without markings. A gill is present, visible on the right side of the body under the notum. A small internal shell is present.
Size range: 15mm

Specific characteristics: Difficult to separate from Berthella aurantiaca in the field. The position of the anus relative to the gill and the small internal shell are the characteristics that can separate the two species.