The little Aplysia coming of age: from one species to a complex of species complexes in Aplysia parvula (Mollusca: Gastropoda: Heterobranchia) Author Golestani, Haleh Author Crocetta, Fabio Author Padula, Vinicius Author Camacho-García, Yolanda Author Langeneck, Joachim Author Poursanidis, Dimitris Author Pola, Marta Author Yokeş, M. Baki Author Cervera, Juan Lucas Author Jung, Dae-Wui Author Gosliner, Terrence M. Author Araya, Juan Francisco Author Hooker, Yuri Author Schrödl, Michael Author Valdés, Ángel text Zoological Journal of the Linnean Society 2019 187 279 330 journal article 0024-4082 3A70B56-000D-4974-AAC6-F1B198C86BC4 APLYSIA NORFOLKENSIS G. B. SOWERBY II, 1869 Aplysia norfolkensis G. B. Sowerby II, 1869 : (216), pl. 10, fig. 42A–B. Type locality: Norfolk Island , Australia . Type : Probably lost, not found at NHMUK (A. Salvador, pers. comm.). Remarks Sowerby II (1869) introduced the name Aplysia norfolkensis based on a shell collected in Norfolk Island , Australia . The short description stated: ‘Shell horny, brown, arched, ventricose, obliquely subovate, thin, smooth; apex elevated, round, auriculated at the back; upper margin sloped, excavated; outer lip rather convex; lower margin rounded, dorsal margin arched; rounded, thinly reflected near the apex, obliquely inclined towards the lower end.’ The illustrations of the shell ( Sowerby II, 1869 : pl. 10, fig. 42A–B) represent an elongate brown specimen with a curved apex, very similar to other shells of A. parvula s.l. here examined. As in the previous case, Eales (1960) considered A. norfolkensis a synonym of A. parvula based on the shell morphology. However, in this study we have revealed the existence of several species with a similar shell morphology and it is virtually impossible to determine the identity of this species. Therefore, A. norfolkensis is here regarded as a taxon inquirendum .