Zelentia Korshunova, Martynov & Picton, 2017

Korshunovа, Tаtiаnа, Fletcher, Kаrin, Lundin, Kennet, Picton, Bernаrd & Mаrtynov, Аlexаnder, 2018, The genus Zelentia is an amphi-boreal taxon expanded to include three new species from the North Pacific and Atlantic oceans (Gastropoda: Nudibranchia: Trinchesiidae), Zootaxa 4482 (2), pp. 297-321 : 303

Genus Zelentia Korshunova, Martynov & Picton, 2017

Type species: Eolis pustulata Alder & Hancock, 1854

Diagnosis. 3–6 anterior rows of cerata in adults, rhinophores smooth, oral tentacles present, no anterior foot corners, cnidosacs present, pharynx moderately broad, jaws with single row of simple denticles, radular teeth narrow to moderately widened with low cusp (not considerably retracted or protracted), smaller intercalating denticles in between large ones restricted as mostly adjacent to cusp, teeth non pectinated, penis with stylet curved in different degrees.

Remarks. The original diagnosis of the genus Zelentia (see Korshunova et al. 2017a), is retained here essentially consistent with the original description. These characters include relatively numerous anterior ceratal branches, predominantly narrow teeth with neither a considerably protracted nor retracted cusp, non-pectinate teeth without exceedingly long lateral denticles in adult state, commonly curved penial stylet. The diagnosis is somewhat amended here in order to differentiate the above listed characters and also to accommodate additional data on the type species, Z. pustulata , including the up to six anterior rows of cerata and the moderately widened radular teeth in large specimens of Z. pustulata from the White Sea (see Fig. 6 ). Moderately widened radular teeth are also present in the species Zelentia fulgens ( MacFarland, 1966) . The latter species is also described with a short almost straight penial stylet ( MacFarland, 1966: Plate 69, fig. 3А); this is likely a misinterpretation due to retraction of the slightly curved stylet, but a further study is needed.

Figures

FIGURE 6. Zelentia pustulata (Alder & Hancock, 1854), A. Living animal, White Sea, Cape Kartesh, 15–20 m, dorsal view; B. Same specimen, ventral view; C. Fixed animal, White Sea, Rugozerskaya Guba, 10–20 m depth, dorsal view; D. Living specimen, Achill Island, Ireland, 25 m, dorsal view; E. Same specimen, ventral view; F. Jaw, specimen from Rugozerskaya Guba, SEM; G. Radular teeth, anterior part, White Sea, Cape Kartesh, SEM; H. Radular teeth, anterior part, Ireland, SEM; I. Radular teeth, specimen from Rugozerskaya Guba, SEM, posterior part; J. Same specimen, posterior part of radula towards middle part; K. Same specimen, anterior part; L. Stylet, specimen from Ireland, SEM; M. Penis with stylet, specimen from Rugozerskaya Guba, SEM; N. Penis with stylet, close up, same specimen, SEM; Scale bars: F—300 µm, G—10 µm, H—10 µm, I–L—30 µm, M—100 µm, N—30 µm. Photos: (A–B) Tatiana Korshunova; (C) Alexander Martynov; (D–E) Bernard Picton. SEM: Alexander Martynov (F–M).