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FIGURE 7 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 7. Moridilla jobeli sp. nov.: Scanning electron micrographs (SEM) of radula of paratype MZB.Gst.21.593. (A) Over- view of radula. (B) Details of oldest rachidian teeth; lateral denticles partly worn off. (C) Details of rachidian teeth from hind part. (D) Rachidian tooth with an abnormal number (3 instead of 2) of denticles on one side.

FIGURE 11 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 11. COI NeighborNet analysis of reduced data set with Moridilla, Palisa and Noumeaella only. The major split between Moridilla and Palisa/Noumeaella is visualized by a red line. Please note the low resolution (short edges) between the various species and genera.

FIGURE 6 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 6. Moridilla jobeli sp. nov.: Pharyngeal structures of paratype MZB.Gst.21.593. (A) Masticatory border of jaw with denticles (light-microscopy). (B) Details of masticatory border of jaw with denticles (SEM).

FIGURE 4 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 4. Moridilla jobeli sp. nov.: MicroCT reconstructions of paratype MZB.Gst.21.593. Epidermis rendered transparent, digestive system greenish, reproductive system bluish, nervous system yellow. (A) Dorsal view of anterior body without digestive system, except pharynx. (B) Dorsal view of anterior body with digestive system. (C) Lateral view without digestive system; nidamental gland and jaw sagittal sectioned. (D) Ventral view with digestive system; note openings of penis and nidamental gland, followed by nephropore and further back anus (arrows). Abbrevations: a, anus; am, ampulla; at, atrium; cpl, cerebropleural ganglia; dg, digestive gland; hc, haemolymph channel; g, gonad; jw, jaw; ng, nidamental gland; np, nephropore; pc, pericardium (transparent) with ventricle shining through; pg, pedal ganglia; ph, pharynx; rd, radula; rh, rhinophores; sg, salivary gland; st, stomach.

FIGURE 5 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 5. Moridilla jobeli sp. nov.: Digestive system of paratype SRU20190001. (A) Mouth opening; note the specialized vacuolated cells. (B) Pharynx with jaws. (C) Salivary glandular ducts (arrows). (D) Transition pharynx to oesophagus; please note the cuticle in the oesophagus (arrows). (E) Stomach epithelium. (F) Stomach and transition to left and right anterior diges- tive gland ducts. Abbrevations: dg, digestive gland; jw, jaw; ph, pharynx.

FIGURE 3 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 3. Moridilla jobeli sp. nov.: Schematics based on paratypes MZB.Gst.21.593 and SRU20190001. (A) Digestive system. (B) Genital system. Abbrevations: am, ampulla; dg, digestive gland; oes, oesophagus; in, intestine; jw, jaw; ng, nidamental gland; ot, oral tube; p, penis; ph, pharynx; pr, prostate; rd, radula; rs, receptaculum seminis; sg, salivary gland; st, stomach; ty, typhlosole.

FIGURE 2 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 2. Moridilla jobeli sp. nov.: Living animals. (A) SRU2015/01/Nosp2-15Bu-2 on Caulerpa racemosa, with close- up of cerata. (B) Paratype SRU20190001. (C) Paratype SRU20190001ventral view, SRU2015/01/Nosp2-15Bu-2 lateral view on original substrate Caulerpa racemosa. (D) SRU2016/02/Nosp2-16Bu-1 in situ, with close-up of cerata. (E) SRU2016/02/ Nosp2-16Bu-5 crawling on sponge. (F) Holotype MZB.Gst.21.592 in situ on sponge.

FIGURE 1 in Description of a new Moridilla species from North Sulawesi, Indonesia (Mollusca: Nudibranchia: Aeolidioidea) - based on MicroCT, histological and molecular analyses

FIGURE 1. Location of study area: (A) Indonesia and Sulawesi with dashed lines indicating close-up area in B. (B) Localities (red dots) in Bunaken National Park (BNP).

Fig. 2 in Undressing Lophodoris danielsseni (Friele & Hansen, 1878) (Nudibranchia: Goniodorididae)

Fig. 2 Microcomputed tomography images (μCT) of Lophodoris daniehsseni (ZMBN 130690). a Lateral view of body spicules. b Dorsal view of mantle spicules. c Ventral view of foot spicules. d Detail of

Fig. 1 in Undressing Lophodoris danielsseni (Friele & Hansen, 1878) (Nudibranchia: Goniodorididae)

Fig. 1 Lophodoris daniehsseni (Friele & Hansen, 1876), photographs of living animal. a ZMBN 130690 (photograph by C. Rauch). b ZMBN 130699 (photograph by H. Jensen)

Fig. 5 in Undressing Lophodoris danielsseni (Friele & Hansen, 1878) (Nudibranchia: Goniodorididae)

Fig. 5 Phylogenetic relationships based on cytochrome C oxidase subunit I (COI). Topology of the tree based on Bayesian Inference analysis. Numbers above branches indicate posterior probabilities from BI and bootstraps from ML (BI/ML). Green circle indicates Goniodorididae taxa. Sequences of Lophodoris daniehsseni in bold and highlighted with a blue rectangle. On the right side of each genus, there

Fig. 4 in Undressing Lophodoris danielsseni (Friele & Hansen, 1878) (Nudibranchia: Goniodorididae)

Fig. 4 Scanning electron micrographs (SEM) of Lophodoris daniehsseni (ZMBN 130699). a Radula. b Detail of inner lateral teeth. c Detail of outer lateral teeth. d Penial spines. Scale bars a 300 μm. b 50 μm. c 30 μm. d 50 μm

Fig. 3 in Undressing Lophodoris danielsseni (Friele & Hansen, 1878) (Nudibranchia: Goniodorididae)

Fig. 3 Lophodoris daniehsseni (Friele & Hansen, 1876). a, b, d, e μCT reconstruction of internal anatomy by μCT using Amira software, and c drawing of reproductive system under dissecting microscope (ZMBN 130699), scale bar 1 mm. a Dorsal view of the internal anatomy. b Digestive system and nervous glands. c–e Reproductive system. am, ampulla; bb, buccal bulb; bc, bursa copulatrix; bp, buccal pump; fgd, female gland duct; fgm, female gland mass; h, heart; hd, hermaphroditic duct; in, intestine; ns, nervous system; oe, esophagus; ov, ovotestis; pb: penial bulb; pr, prostate; ra, radular sac; rs, receptaculum seminis; sgl, salivary gland; st, stomach; ud, uterine duct; va, vagina; vd, vas deferens

Fig. 15 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 15 Ziminella vrijenhoeki Valdés et al. 2018, MIMB 42255, external morphology and SEM micrographs of internal morphology. A, dorsal view. B, ventral view. C, living specimen in natural environment. D, jaw masticatory border. E, details of denticulation of

Fig. 14 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 14 Results of molecular analysis of different aeolid groups. A, genus Cuthona, COI haplotype network produced with TCS method in PopART. Colors of circles refer to the geographic origin of each haplotype. The relative size of circles is proportional to the number of sequences of that same haplotype. B, molecular phylogenetic hypothesis of genus Cuthona, maximum likelihood, concatenated dataset of three markers (COI + 16S + H3), species-level clades and outgroups are collapsed to a single branch, except Cuthona and Bohuslania species. Numbers above branches indicate posterior probabilities from Bayesian inference, numbers below branches, bootstrap support from maximum likelihood. C, molecular phylogenetic

Fig. 16 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 16 Zeusia herculea (Bergh, 1894), MIMB 42254, external morphology and SEM micrographs of internal morphology. A, dorsal view. B, ventral view. C, living specimen in natural environment. D, posterior radular portion. E, anterior radular portion. F, G,

Fig. 13 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 13 Cuthona sp., MIMB 42232, external morphology and SEM micrographs of internal morphology. A, living specimen. B, radula. C, rachidian teeth. Scale bars: A, 5 mm; B, 100 µm; C, 20 µm. Living photo by Anastassya Maiorova

Fig. 12 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 12 Dendronotus kurilensis sp. nov., external morphology and SEM micrographs of internal morphology. A, holotype MIMB 42237, dorsal view. B, MIMB 42237, lateral view from left. C, holotype MIMB 42237, lateral view from right. D, paratypes MIMB 42235. E, paratype MIMB 42238. C, MIMB 42235b, right jaw plate. D, MIMB 42235b, denticulation of masticatory border. E, MIMB

Fig. 10 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 10 Dendronotus patricki Stout et al. 2011, external morphology and SEM micrographs of internal morphology. A, MIMB 42239. B, MIMB 42240. C, MIMB 42241, dorsal side. D, MIMB 42241, ventral side. E, MIMB 42241, left jaw plate. F, MIMB 42241, denticulation of masticatory border. F, MIMB 42241, radula. G, MIMB 42241, rachidian and lateral teeth, posterior radular portion. H, MIMB 42241, rachidian tooth, posterior radular portion. J, MIMB 42241, lateral teeth, posterior radular portion. Scale bars: A–D, 5 mm; E, G, H, 200 µm; F, I, J, 100 µm. Living photos by Anastassya Maiorova

Fig. 11 in Connected across the ocean: taxonomy and biogeography of deep-water Nudibranchia from the Northwest Pacific reveal trans-Pacific links and two undescribed species

Fig. 11 Dendronotus zakuro Martynov et al. 2020, external morphology and SEM micrographs of internal morphology. A, MIMB 42244. B, MIMB 42243. C, MIMB 42244, left jaw plate. D, MIMB 42244, denticulation of masticatory border. E, MIMB 42244, posterior radular portion. F, MIMB 42244, middle radular portion. G, MIMB 42244, anterior radular portion. Scale bars: A, B, 5 mm; C, 500 µm; D, 20 µm; F–J, 100 µm. Living photos by Anastassya Maiorova