Plakobranchus noctisstellatus sp. nov. A dorsal view of the animal B ventral view of the animal, C detail of the eye D last teeth of the ascending series and active teeth E teeth in the ascus F reproductive system. Abbreviations: am – ampulla; bc – bursa copulatrix; hd – hermaphrodite duct; mg – mucus gland; ot – ovotestis, p – penis; s – stylet; vd – vas deferens.