Schematic outline of the reproductive systems of the taxa of the families Unidentiidae, Samlidae fam. n. and Apataidae fam. n. integrated with molecular phylogenetic data. Colour indication of reproductive system characters: ampulla – green; body wall – gray; distal receptaculum seminis – red; female gland mass – yellow; female genital opening – orange; penis and male genital opening – dark blue; penial sheath – pale blue; prostate and prostatic vas deferens – turquoise; proximal receptaculum seminis – pink; supplementary gland – light green.

  Part of: Korshunova T, Martynov A, Bakken T, Evertsen J, Fletcher K, Mudianta WI, Saito H, Lundin K, Schrödl M, Picton B (2017) Polyphyly of the traditional family Flabellinidae affects a major group of Nudibranchia: aeolidacean taxonomic reassessment with descriptions of several new families, genera, and species (Mollusca, Gastropoda). ZooKeys 717: 1-139.