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FIGURE 8 in Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan, with a comparison of two different barcoding markers

FIGURE 8. Baysian phylogenetic tree based on concatenated COI and 16S sequences (1142 bp in total). Numbers near nodes are the posterior probability and bootstrap values, respectively.

FIGURE 6 in Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan, with a comparison of two different barcoding markers

FIGURE 6. Notocomplana septentrionalis (Kato, 1937). A. Dorsal view in the living state, ICHUM5292 (non-type). B. Ventral view in the living state, ICHUM5292 (non-type). C. Eyespots in the living state, ICHUM5292 (non-type). D. Sagittal section of the male copulatory apparatus, anterior to the right, ICHUM5292 (non-type). E. Cross section of the male copulatory apparatus, ICHUM5295 (non-type). F. Weakly folded epithelium of the male atrium, ICHUM5291 (non-type). G. Extensively folded epithelium of the male atrium, ICHUM5294 (non-type). H. Sagittal section of the female copulatory apparatus, anterior to the right, ICHUM5292 (non-type). Abbreviations: cec, cerebral eye cluster; cg, cement glands; cov, common oviduct; exc, extra-vesicular gland's canal, fg, female gonopore; ied, intra-prostatic ejaculatory duct; ld, Lang's duct; lv, Lang's vesicle; ma, male atrium; mg, male gonopore; ov, oviduct; ped, post-prostatic ejaculatory duct; ph, pharynx; pp, penis papilla; pv, prostatic vesicle; sv, seminal vesicle; tec, tentacular eye cluster; v, vagina.

FIGURE 5 in Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan, with a comparison of two different barcoding markers

FIGURE 5. Notocomplana koreana (Kato, 1937). A. Dorsal view in the living state, ICHUM5281 (non-type). B. Ventral view in the living state, ICHUM5281 (non-type). C. Eyespots in the living state, ICHUM5278 (non-type). D. Sagittal section of the male copulatory apparatus, anterior to the right, ICHUM5278 (non-type). E. Cross section of the male copulatory apparatus, ICHUM5279 (non-type). F. Sagittal section of the female copulatory apparatus, anterior to the right, ICHUM5278 (non-type). Abbreviations: cec, cerebral eye cluster; cov, common oviduct; fg, female gonopore; ied, intra-prostatic ejaculatory duct; ld, Lang's duct; lv, Lang's vesicle; ma, male atrium; mg, male gonopore; ov, oviduct; ped, post-prostatic ejaculatory duct; ph, pharynx; pp, penis papilla; pv, prostatic vesicle; sd, sperm duct; sv, seminal vesicle; tec, tentacular eye cluster; v, vagina.

FIGURE 4. Diagrams showing the copulatory complex. A in Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan, with a comparison of two different barcoding markers

FIGURE 4. Diagrams showing the copulatory complex. A. Notocomplana japonica (Kato, 1937) comb. nov. B. Notocomplana koreana (Kato, 1937). C. Notocomplana septentrionalis (Kato, 1937). All anterior to the right. Abbreviations: cov, common oviduct; csd, common sperm duct; fg, female gonopore; ied, intra-prostatic ejaculatory duct; ld, Lang's duct; lv, Lang's vesicle; ma, male atrium; mg, male gonopore; ov, oviduct; ped, post-prostatic ejaculatory duct; pp, penis papilla; pv, prostatic vesicle; sd, sperm duct; sv, seminal vesicle; v, vagina.

FIGURE 3 in Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan, with a comparison of two different barcoding markers

FIGURE 3. Notocomplana japonica (Kato, 1937) comb. nov. A. Dorsal view in the living state, ICHUM5282 (non-type). B. Ventral view in the living state, ICHUM5282 (non-type). C. Eyespots in the living state, ICHUM5282 (non-type). D. Sagittal section of the male copulatory apparatus, anterior to the right, ICHUM5282 (non-type). E. Cross section of the male copulatory apparatus, ICHUM5286 (non-type). F. Sagittal section of female copulatory apparatus, anterior to the right, ICHUM5282 (nontype). Abbreviations: cec, cerebral eye cluster; cov, common oviduct; fg, female gonopore; ied, intra-prostatic ejaculatory duct; ld, Lang's duct; lv, Lang's vesicle; ma, male atrium; mg, male gonopore; ped, post-prostatic ejaculatory duct; ph, pharynx; pp, penis papilla; pv, prostatic vesicle; sv, seminal vesicle; tec, tentacular eye cluster; v, vagina.

FIGURE 2 in Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan, with a comparison of two different barcoding markers

FIGURE 2. Notocomplana hagiyai sp. nov. Diagram of the copulatory complex, anterior to the right. Abbreviations: cov, common oviduct; exc, extra-vesicular gland's canal; fg, female gonopore; ied, intra-prostatic ejaculatory duct; ld, Lang's duct; lv, Lang's vesicle; ma, male atrium; mg, male gonopore; ov, oviduct; ped, post-prostatic ejaculatory duct; pp, penis papilla; pv, prostatic vesicle; sd, sperm duct; sv, seminal vesicle; v, vagina.

FIGURE 1 in Description of a new Notocomplana species (Platyhelminthes: Acotylea), new combination and new records of Polycladida from the northeastern Sea of Japan, with a comparison of two different barcoding markers

FIGURE 1. Notocomplana hagiyai sp. nov. A. Dorsal view in the living state, ICHUM5267 (holotype). B. Ventral view in the living state, ICHUM5267 (holotype). C. Eyespots in the living state, ICHUM5267 (holotype). D. Sagittal section through the male copulatory apparatus, anterior to the right, ICHUM5267 (holotype). E. Cross section through the male copulatory apparatus, ICHUM5272 (paratype). F. Sagittal section through the female copulatory apparatus, anterior to the right, ICHUM5267 (holotype). Abbreviations: cec, cerebral eye cluster; cov, common oviduct; exc, extra-vesicular gland's canal; fg, female gonopore; ied, intra-prostatic ejaculatory duct; ld, Lang's duct; lv, Lang's vesicle; ma, male atrium; mg, male gonopore; ped, post-prostatic ejaculatory duct; ph, pharynx; pp, penis papilla; pv, prostatic vesicle; sd, sperm duct; sv, seminal vesicle; tec, tentacular eye cluster; v, vagina.

FIGURE 4. Bresilia cinctus n in A new deep-sea species of the caridean genus Bresilia Calman, 1896 (Crustacea: Decapoda: Bresiliidae) from Sagami Bay, central Japan

FIGURE 4. Bresilia cinctus n. sp., holotype, ovigerous female (cl 4.4 mm), CBM-ZC 13987. A, left maxilliped 3, lateral view; B, left pereopod 1, lateral view; C, left pereopod 2, lateral view; D, same, chela, flexor view.

FIGURE 5. Bresilia cinctus n in A new deep-sea species of the caridean genus Bresilia Calman, 1896 (Crustacea: Decapoda: Bresiliidae) from Sagami Bay, central Japan

FIGURE 5. Bresilia cinctus n. sp., holotype, ovigerous female (cl 4.4 mm), CBM-ZC 13987. A, distal 2 articles of left maxilliped 3, mesial view; B, carpus and proximal part of palm of left pereopod 1, mesial view, showing grooming apparatus; C, chela of left pereopod 1, flexor view; D, same, fingers, flexor view; E, same, extensor view; F, fingers of pereopod 2, flexor view.

FIGURE 3. Bresilia cinctus n in A new deep-sea species of the caridean genus Bresilia Calman, 1896 (Crustacea: Decapoda: Bresiliidae) from Sagami Bay, central Japan

FIGURE 3. Bresilia cinctus n. sp., holotype, ovigerous female (cl 4.4 mm), CBM-ZC 13987. A, anterior part of carapace and cephalic appendages, dorsal view (distal part of left antennal scale damaged); anterior part of carapace, dorsolateral view; C, epistomal process, ventral view; D, right antenna, ventral view (flagellum missing); E, left mandible, internal view (molar process broken off); F, left maxillule, external view; inset, endopod in inner view; G, left maxilla, external view; H, left maxilliped 1, external view; I, left maxilliped 2, external view.

FIGURE 2. Bresilia cinctus n in A new deep-sea species of the caridean genus Bresilia Calman, 1896 (Crustacea: Decapoda: Bresiliidae) from Sagami Bay, central Japan

FIGURE 2. Bresilia cinctus n. sp., holotype, ovigerous female (cl 4.4 mm), CBM-ZC 13987. A, carapace and cephalic appendages, lateral view; B, pleon, lateral view.

FIGURE 14 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 14. Dendrogram based on UPGMA cluster analysis using the faunistic similarity data obtained for each landscape cluster: AUa, Amur-Ussury area; SSd, South Seaside district; MSd, East Manchuria Seaside district (see ESupplement5.pdf).

FIGURE 15 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 15. Paleogeographic reconstruction before opening of the Japan Sea: (a) Oligocene (following Itoh 2017, p. 86, fig. 1); (b) Early Miocene (modified from Uemura 2006; in Ozawa 2016, p. 137, fig. 14). Nipponasellus (red dots), Phreatoasellus (yellow dots), Sibirasellus (green dots).

FIGURE 13 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 13. Scanning electron micrographs of pleopod 2 of Nipponasellus matsumotoi spec. nov., adult male: (A) pair of pleopods 2, ventral view; (B) endopodite of pleopod 2, right; (C, D) appendix masculina enlarged, right and left.

FIGURE 11. Nipponasellus matsumotoi spec. nov., holotype X54659 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 11. Nipponasellus matsumotoi spec. nov., holotype X54659/Cr-2477-FEFU, male, 5.5 mm: (A) pereopod 1, with enlarged palm; (B) pereopod 2; (C) pereopod 3; (D) pereopod 4; (E) pereopod 5; (F) pereopod 6; (G) pereopod 7.

FIGURE 4 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 4. Habitus of examined specimens: (A, B) Nipponasellus sudzukhensis spec. nov., holotype X54657/Cr-2475-FEFU, male, 5.5 mm, dorsal view (A); lateral view (B). (C, D) Nipponasellus matsumotoi spec. nov., holotype X54659/Cr-2477-FEFU, male, 5.0 mm, dorsal view (C); lateral view (D).

FIGURE 9 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 9. Scanning electron micrographs of pleopod 2 of Nipponasellus sudzukhensis spec. nov., adult male: (A) pair of pleopods 2, ventral view; (B) endopodite of pleopod 2, right; (C, D) appendix masculina enlarged, right and left.

FIGURE 8. Nipponasellus sudzukhensis spec. nov., holotype X54657 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 8. Nipponasellus sudzukhensis spec. nov., holotype X54657/Cr-2475-FEFU, male, 5.0 mm: (A) pleotelson, ventral view (g.p., genital papilla); (B) pleopod 1; (C) pleopod 2, with schematic outline of details of appendix masculina; (D) pleopod 3; (E) pleopod 4; (F) pleopod 5; (G) uropod. Paratype X54658/Cr-2476-FEFU, female, 6.0 mm: (H) pleopod 2.

FIGURE 12. Nipponasellus matsumotoi spec. nov., holotype X54659 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 12. Nipponasellus matsumotoi spec. nov., holotype X54659/Cr-2477-FEFU, male, 5.5 mm: (A) pleotelson, ventral view, with enlarged section of coxopodite 7 (g.p., genital papilla); (B) pleopod 1; (C) pleopod 2, with schematic outline of details of appendix masculina; (D) pleopod 3; (E) pleopod 4; (F) pleopod 5; (G) uropod. Paratype X54660/Cr-2478-FEFU, female, 4.2 mm: (H) pleopod 2.

FIGURE 3 in Trans-Japan Sea land-bridge disjunction: A case of vicariance in the subterranean genus Nipponasellus (Crustacea, Isopoda, Asellidae) in a largescale biogeographical context

FIGURE 3. Consensus tree of genera and informal groups of Asellidae showing distribution of character states, with Nipponasellus highlighted in gray and Asellus-pattern highlighted in green. Additive characters nos. 2, 7, 8, 9, 10, 11. Black rectangles – unreversed apomorphies, empty rectangles – homoplasious apomorphies.