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Fig. 14 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 14. Haplotype network of Doriopsilla Bergh, 1880 sequences from the 16S data subset (for the corresponding tree see Supp. file 2: Fig. S3). Coloured nodes on the haplotype network correspond to specific geographic localities and the size of the coloured nodes corresponds to the number of analysed sequences. Hash marks on the haplotype network denote mutational steps.

Fig. 13 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 13. Haplotype network of Doriopsilla Bergh, 1880 sequences from the CO1 data subset (for the corresponding tree see Supp. file 2: Fig. S4). Coloured nodes on the haplotype network correspond to specific geographic localities and the size of the coloured nodes corresponds to the number of available sequences. Hash marks on the haplotype network denote mutational steps.

Fig. 11 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 11. Phylogenetic reconstruction of Dendrodorididae O'Donoghue, 1924 based on16S data set, with Bathydoris aioca Er. Marcus & Ev. Marcus, 1962 and Prodoris clavigera (Thiele, 1912) as outgroup. Terminal taxa at species level partly collapsed (triangles coloured for clarity) and specimen numbers written in brackets. Species in red are newly sequenced in this study. Species more related to the Iranian sequences are mentioned with their localities. Numbers before and after slash indicate approximate likelihood ratio test (SH-aLRT) and bootstrap values for maximum likelihood (ML) respectively. Values less than 50 are removed. Coloured bars indicate species delimitation resulting from ABGD test.

Fig. 9 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 9. Genital system of Doriopsilla aroni sp. nov. A. Highly lobulated prostate gland. B. Transition of penis into penial sheath. C. Detail of penis showing the area, where spines start; note the various shapes. D. Fertilisation chamber containing a few eggs. E. Bursa copulatrix. F. Empty receptaculum seminis in vicinity of bursa copulatrix. Abbreviations: Bc = Bursa copulatrix; Pr = Prostate gland; Rs = Receptaculum seminis; Va = Vaginal duct; Vd = Vas deferens.

Fig. 7 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 7. Histological sections of Doriopsilla aroni sp. nov. A. Cross section of tubercles containing spicules. B. Cross section of the mantle with spicules; two parasites can be seen in the notum tissue. C. Cross section of oesophagus and part of cerebropleural/pedal ganglia with statocyst. D. Cross section of oesophagus and opening of intestine into stomach with pyloric gland. E. Cross section of muscular oesophagus. F. Cross section of highly ciliated and muscular intestine. Abbreviations: Cplg = Cerebropleural ganglion; G = Glandular vesicle containing mucopolysaccharides (stained in violet); GF = Glandular follicles surrounded by muscle layers; In = Intestine; Oe = Oesophagus; P = Parasite; Peg = Pedal ganglion; Pgl = Pyloric gland; Sp = Spicules; St = Statocyst with otoconia.

Fig. 2 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 2. External appearance of live animals. A. Dorsal view of Dendrodoris nigra (W. Stimpson, 1855) with black mantle and yellow spots. B. Dendrodoris nigra with black mantle, white spots, and a thick distinct red submarginal band; inset shows ventral view. C. Dendrodoris fumata (Rüppell & Leuckart, 1830) black form. D. Dendrodoris fumata red form. E. Dendrodoris fumata pale brown form. F. Dorsal view of Doriopsilla aroni sp. nov.; inset shows ventral view.

Fig. 5 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 5. Schematic outline of genital system of species of Dendrodoris Ehrenberg, 1831. A. D. nigra (W. Stimpson 1855). B. D. fumata (Rüppell & Leuckart, 1830). Abbreviations: Am = Ampulla; Bc = Bursa copulatrix; Gn = Gonad; P = Penis; Pr = Prostate gland; Rs = Receptaculum seminis; Va = Vaginal duct; Vgl =Vestibular gland.

Fig. 1 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 1. Information on collection sites of specimens of Dendrodorididae O'Donoghue, 1924 (1864). A. Location of collection sites along the Iranian coast line. B. Bandar Lengeh, collection site exposed at low tide. C. Lavan Island, collection site exposed at low tide.

Fig. 4 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 4. Histological cross sections of sensory organs and genital, circulatory, and excretory systems of Dendrodoris nigra (W. Stimpson, 1855). A. Prostate gland. B. Vestibular gland with high microvilli edge (arrows). C. Statocyst with several otoconia (arrow) and eye. D. Blood gland. E. Kidney, digestive gland, and gonad. F. Syrinx; note the highly folded interior. Abbreviations: Dgl = Digestive gland; Ey = Eye; Go = Gonad; Ki = Kidney;

Fig. 6 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 6. Histological cross sections of genital system of Dendrodoris fumata (Rüppell & Leuckart, 1830). A. Gonad, ampulla, and prostate. B. Penis with spines (arrows) inside the muscular sheath. C. Vaginal duct and vas deferens. D. Receptaculum seminis. E. Gonad, prostate, bursa copulatrix, receptaculum seminis, proximal oviduct and a part of nidamental gland. F. Strongly folded vestibular gland (*) starting from less folded oviduct. G. Vestibular gland. H. Vestibular gland. Note the thick microvilli fringe. Abbreviations: Am = Ampulla; Bc = Bursa copulatrix; Gn = Gonad; Ngl = Nidamental gland; Ov = Oviduct; P = Penis; Pr = Prostate gland; Rs = Receptaculum seminis; Va = Vaginal duct; Vd = Vas deferens.

Fig. 12 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 12. Phylogenetic reconstruction of Dendrodorididae O'Donoghue, 1924 based on complete CO1 data set, with Bathydoris aioca Er. Marcus & Ev. Marcus, 1962 and Prodoris clavigera (Thiele, 1912) as outgroup. Terminal taxa on species level partly collapsed (triangles coloured for better clarity) and specimen numbers written in brackets. Species written in red are new in this study. Species more related to the Iranian sequences are mentioned with their locality. Numbers before and after slash indicate approximate likelihood ratio test (SH-aLRT) and bootstrap values for maximum likelihood (ML) respectively. Values less than 50 are removed. Coloured bars indicate species delimitation resulting from ABGD test.

Fig. 10 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 10. Phylogenetic reconstruction of Dendrodorididae O'Donoghue, 1924 based on a concatenated data set (CO1 and 16S), with Bathydoris aioca Er. Marcus & Ev. Marcus, 1962 and Prodoris clavigera (Thiele, 1912) as outgroup. Terminal taxa at species level partly collapsed (triangles coloured for clarity) and specimen numbers written in brackets. Species in red are newly sequenced in this study. Numbers indicate bootstrap values for maximum likelihood (ML) test. Localities are provided for species closely related to the Iranian specimens.

Fig. 8 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 8. Schematic outline of digestive and genital system of Doriopsilla aroni sp. nov. A. Digestive system. B. Genital system and separate schematic outline of inverted penis. C. Penial spines of different shapes. Abbreviations: Bc = Bursa copulatrix; Cplg = Cerebropleural ganglion; In = Intestine; MO = Mouth opening; MP = Muscular portion of oesophagus; Ngl = Nidamental gland; Oe = Oesophagus; Ov = Oviduct; P = Penis; Peg = Pedal ganglion; Ph = Pharynx; Pgl = Pyloric gland; Pr = Prostate gland; PS = Penial sheath; Rem = Retractor muscle; Rs = Receptaculum seminis; Sp = Spine; Va = Vagina; Vd = Vas deferens; Ves = Vestibulum.

Fig. 3 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 3. Histological cross sections of epidermis, digestive system, and part of the genital system of Dendrodoris nigra (W. Stimpson, 1855). A. Mantle. B. Head area with parts of the digestive system; the oral tube is marked with a star. C. Section behind the head region with parts of the genital system. D. Stomach with folded wall (arrow). E. Intestine. F. Ampulla. Abbreviations: Am = Ampulla; E = Empty unicellular gland; Ep = Epithelium; G = glandular vesicle with mucopolysaccharides (stained violet); LD = Labial disc; Oe = Oesophagus; Ph = Pharynx; Sgl = Salivary gland; Vgl = Vestibular gland; Rs = Receptaculum seminis.