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Fig. 5 in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 5. Scanning electron micrographs of the radular teeth. A–C. Doris ocelligera (Bergh, 1881) (ZSM20240260). D–F. Doris berghi (Vayssière, 1901) comb. rest. (ZSM20240261). Showing first (fl) and subsequent (cl) lateral teeth.

Fig. 7. A–B in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 7. A–B. Scanning electron micrographs of the radular teeth of Doris verrucosa Linnaeus, 1758, showing first (fl) and subsequent (cl) lateral teeth.

Fig. 6 in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 6. Schematic drawing of the reproductive systems. A. Doris ocelligera (Bergh, 1881). B. Doris berghi (Vayssière, 1901) comb. rest. Abbreviations: A = ampulla; Bc = bursa copulatrix; Fgl = female glands; Ps = penial sheath; R = seminal receptacle; Vd = vas deferens; Vdu = vaginal duct. The black arrowheads represent the connection of the ampulla to the gonad.

Fig. 8 in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 8. Doris marmorata (Risso, 1818). A. Specimen from Blanes, NE Spain (ZSM20240263). B. Specimen from Sant Feliu de Guíxols, NE Spain (ZSMMol20210023).

Fig. 3 in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 3. Results from ASAP for both COI (top) and 16S (bottom) markers of the alignment of the species within the genus Doris Linnaeus, 1758 based on the phylogenetic tree results. Colour boxes refer to species hypotheses and the dash-line is the threshold (representing a 5–10% genetic divergence distance) in which species hypotheses were selected.

Fig. 1 in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 1. Map of the Iberian Peninsula and North-West Africa showing the sampling localities where specimens of Doris ocelligera (Bergh, 1881) were collected. The purple triangles show the locations where the blueish morphotype specimens were taken, whereas the yellow circles show the locations where the yellow morphotype specimens were collected. Map generated at https://www.simplemappr.net

Fig. 4. A. Doris verrucosa Linnaeus, 1758 in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 4. A. Doris verrucosa Linnaeus, 1758 (ZSM20210044) from Thau, SE France. B–E. Doris berghi (Vayssière, 1901) comb. rest. B. Specimen from Sant Feliu de Guíxols, NE Spain (ZSMMol20210024). C. Specimen from Begur, NE Spain (MCZMal395161).D. Specimen from Gran Canaria (ZSM20240262). E. Specimen from Galicia, NW Spain (ZSM20240261). F–H. Doris ocelligera (Bergh, 1881). F. Specimen from l'Escala, NE Spain (MCZ395160). G. Specimen from Sant Feliu de Guíxols, NE Spain (ZSM20240260). H. Specimen from Sant Feliu de Guíxols, NE Spain (ZSM20240259).

Fig. 2 in Molecular and morpho-anatomical assessment of the family Dorididae (Mollusca, Nudibranchia) in the Mediterranean and North-East Atlantic

Fig. 2. Bayesian phylogenetic tree of Dorididae Rafinesque, 1815 based on the concatenated alignment of COI, 16S, and H3 markers. Posterior probabilities and bootstrap support values are shown above and below branches, respectively. The outgroup used to root the tree was the genus Aphelodoris Bergh, 1879. Green dots indicate nodes with maximum branch support in both analyses. The scale bar indicates substitutions per site. Names of the sequences downloaded from GenBank have not been modified, yet taxa that may belong to a different identity are specified between quotation marks. Specimens sequenced in this study are highlighted in bold.

FIGURE 5 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas

FIGURE 5. Schemes of reproductive systems. A. Adalaria rossica sp. nov.; B. Adalaria ultima sp. nov.; C. Onchidoris expectata sp. nov. Abbreviations: a, ampulla; b, bursa copulatrix; fgm, female gland mass; fo, female opening; p, penis; pr, prostate; psh, penial sheath; r, receptaculum seminis. A–C—1 mm.

FIGURE 4 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas

FIGURE 4. Onchidoris expectata sp. nov. A–H. ZMMU Op-593, fixed holotype, 5 mm length, Kurile Ids, Matua Island; A. Dorsal view; B. Ventral view; C. Buccal pump, lateral view and central nervous system; D. Buccal pump, dorsal view; E. Dorsal view of general dissection; F. Labial cuticle (smooth), SEM; G. radular teeth, anterior and middle parts, SEM; H. radular teeth, close up of anterior view, SEM. Abbreviations: bp, buccal pump; cns, central nervous system; dg, digestive gland; e, eye; h, heart; oe, oesophagus; ph, pharynx; pm, peripheral muscle; psh, penial sheath; rh, rhinophore; rsh, radular sheath; sg, salivary gland. Scale bars: A–E—1 mm; F–H—30 µm. Photos: Tatiana Korshunova, Alexander Martynov.

FIGURE 3 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas

FIGURE 3. Adalaria ultima sp. nov. A–E. ZMMU Op-548, fixed holotype, 21 mm length, Okhotsk Sea, Sakhalinsky Gulf; A. Dorsal view; B. Ventral view; C. Buccal pump, lateral view; D. Buccal pump (dorsal view) and central nervous system; E. Dorsal view of general dissection; F, G. Paratype ZMMU Op-548, Okhotsk Sea; F. radular teeth, anterior and middle parts, SEM; G. radular teeth, close up of anterior view, SEM. Abbreviations: bp, buccal pump; cns, central nervous system; dg, digestive gland; e, eye; fgm, female gland mass; h, heart; oe, oesophagus; ph, pharynx; pm, peripheral muscle; psh, penial sheath; rh, rhinophore; rsh, radular sheath; sg, salivary gland. Scale bars: A–E—1 mm; F, G—100 µm. Photos: Tatiana Korshunova, Alexander Martynov.

FIGURE 2 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas

FIGURE 2. Adalaria rossica sp. nov. A. ZMMU Op-551, fixed holotype, 19.5 mm length, Franz Josef Land: dorsal, ventral and details of dorsal tubercles respectively; B. Living specimen (not collected), Franz Josef Land; C–H. Paratype ZMMU Op- 549; C. Buccal pump, lateral view; D. Buccal pump (dorsal view) and central nervous system; E. Dorsal view of general dissection; F. Labial cuticle (smooth), SEM; G. radular teeth, anterior and middle parts, SEM; H. radular teeth, close up of anterior view, SEM. Abbreviations: a, ampulla; bp, buccal pump; cns, central nervous system; dg, digestive gland; e, eye; fgm, female gland mass; h, heart; is, intestine; oe, oesophagus; ph, pharynx; pm, peripheral muscle; psh, penial sheath; rh, rhinophore; rsh, radular sheath; sg, salivary gland. Scale bars: A, C–E—1 mm; F—30 µm; G, H—100 µm. Photos: (A, C–H) Tatiana Korshunova, Alexander Martynov, (B) Oleg Savinkin.

FIGURE 1 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas

FIGURE 1. Map of the north-eastern part of the northern hemisphere showing localities of Adalaria rossica sp. nov. (square) near the North Pole, Adalaria ultima sp. nov. (circles) in the Sea of Japan and Okhotsk Sea, and Onchidoris expectata sp. nov. (triangles) at Kamchatka and Middle Kurile Matua island.

FIGURE 6 in World's northenmost and rarely observed Nudibranchs: three new Onchidoridid species (Gastropoda: Doridida) from Russian seas

FIGURE 6. Haplotype networks based on molecular data COI showing genetic changes occurring within Adalaria (A) and Onchidoris (B) species.