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Figure 2 from: Landers SC, Sørensen MV (2016) Two new species of Echinoderes (Kinorhyncha, Cyclorhagida), E. romanoi sp. n. and E. joyceae sp. n., from the Gulf of Mexico. ZooKeys 594: 51-71. https://doi.org/10.3897/zookeys.594.8623

Figure 2 - Line art illustrations of Echinoderes romanoi sp. n. A Male, dorsal view B Male, ventral view C Female, segments 10 to 11, dorsal view D Female, segments 10 to 11, ventral view. Abbreviations: gco1/2, glandular cell outlet type 1/2; ld, laterodorsal sensory spot; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; ml, midlateral sensory spot; pa, pachycyclus; pd, paradorsal sensory spot; pe, penile spine; pv, paraventral sensory spot; sd, subdorsal sensory spot; si, sieve plate; sl, sublateral sensory spot; vm, ventromedial sensory spot.

Figure 6 from: Landers SC, Sørensen MV (2016) Two new species of Echinoderes (Kinorhyncha, Cyclorhagida), E. romanoi sp. n. and E. joyceae sp. n., from the Gulf of Mexico. ZooKeys 594: 51-71. https://doi.org/10.3897/zookeys.594.8623

Figure 6 - Light micrographs showing overviews and details in male holotype ZMUC KIN-845 (A–F), and female paratype ZMUC KIN-849 (G) of Echinoderes joyceae sp. n. A Dorsal overview B Ventral overview C Segments 1 to 6, dorsal view D Segments 1 to 6, ventral view E Segments 8 to 11, dorsal view F Segments 8 to 11, ventral view G Segments 9 to 11, dorsal view. Abbreviations: gco1/2, glandular cell outlet type 1/2; ld, laterodorsal sensory spot; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; mds, middorsal spine; pe, penile spine; pd, paradorsal sensory spot; sd, subdorsal sensory spot; si, sieve plate; vm, ventromedial sensory spot.

Figure 7 from: Landers SC, Sørensen MV (2016) Two new species of Echinoderes (Kinorhyncha, Cyclorhagida), E. romanoi sp. n. and E. joyceae sp. n., from the Gulf of Mexico. ZooKeys 594: 51-71. https://doi.org/10.3897/zookeys.594.8623

Figure 7 - Scanning electron micrographs showing overviews and details in head and trunk morphology of female Echinoderes joyceae sp. n. A Lateral overview B Mouth cone and introvert sector 8 C Head and segments 1 to 2, lateral view D Laterodorsal parts of segments 1 to 6 E Trunk segments 1 to 10, lateral view F Laterodorsal parts of segments 4 to 7 G Detail showing sublateral parts of segments 7 to 9 H Detail showing sub- and laterodorsal parts of segment 10 and left tergal extension of segment 11 I Segments 7 to 11, laterodorsal and caudal view. Abbreviations: gco2, glandular cell outlet type 2; ld, laterodorsal sensory spot; ldt, laterodorsal tube; ltas, lateral terminal accessory spine; lvs, lateroventral spine; lvt, lateroventral tube; mds, middorsal spine; ml, midlateral sensory spot; oos, outer oral style; pd, paradorsal sensory spot; psp, primary spinoscalid; sd, subdorsal sensory spot; sec 8, introvert sector 8; si, sieve plate; sp2–5, spinoscalids of rings 2 to 5; tr, trichoscalid; vlt, ventrolateral tube.

Figure 5 from: Landers SC, Sørensen MV (2016) Two new species of Echinoderes (Kinorhyncha, Cyclorhagida), E. romanoi sp. n. and E. joyceae sp. n., from the Gulf of Mexico. ZooKeys 594: 51-71. https://doi.org/10.3897/zookeys.594.8623

Figure 5 - Line art illustrations of Echinoderes joyceae sp. n. A Male, dorsal view B Male, ventral view C Female, segments 10 to 11, dorsal view D Female, segments 10 to 11, ventral view. Abbreviations: gco1/2, glandular cell outlet type 1/2; ld, laterodorsal sensory spot; ldt, laterodorsal tube; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; ml, midlateral sensory spot; pa, pachycyclus; pe, penile spine; sd, subdorsal sensory spot; si, sieve plate; vlt, ventrolateral tube.

Fig. 1 in Expanding the Echinoderes coulli group (Kinorhyncha: Cyclorhagida) with a new species from the Chuuk Islands, Micronesia

Fig. 1. Map showing (A) the position of the Chuuk Islands, and (B) zoom of the sampling localities.

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Fig. 4 in Echinoderes xiphophorus sp. nov. - the first deep-water representative of Echinoderidae in the Sea of Japan (Kinorhyncha: Cyclorhagida)

Fig. 4. Echinoderes xiphophorus sp. nov., ♂, SEM micrographs. A. Dorsal view. B–C. Ventral view, uncoated SEM specimens. Abbreviations: lvt = lateroventral tube; mds = middorsal spine; mlt = midlateral tube; sdt = subdorsal tube; slt = sublateral tube; vlss = ventrolateral sensory spot; vlt = ventrolateral tube; vmgo = ventromedial glandular cell outlet type 1; vmss = ventromedial sensory spot. White circles indicate sensory spots. Dotted white circles indicate glandular cell outlets. White arrowhead indicates cuticular hole of broken sword-like appendage. Numbers indicate the number of the trunk segment. Scale bars: A = 20 µm; B–C = 10 µm.

Fig. 10 in Revision of an Arctic kinorhynch species: Echinoderes svetlanae and E. tubilak are junior synonyms of E. remanei

Fig. 10. Non-metric multidimensional scaling (nMDS) of Euclidean distance similarities of Echinoderes remanei specimens morphometric data for each of the investigated regions; open circles indicate female specimens, filled circles indicate male specimens.

Fig. 9 in Revision of an Arctic kinorhynch species: Echinoderes svetlanae and E. tubilak are junior synonyms of E. remanei

Fig. 9. Box plot showing lateral terminal spines length for males and females of Echinoderes remanei collected in different regions.

Fig. 4 in New Echinoderes (Kinorhyncha: Cyclorhagida) from Mexico: Molecular barcoding demonstrate species delimitation between highly similar morphospecies

Fig. 4. Light micrographs showing overviews and details of (A–I) male holotype, NHMD-920097, and (J) female paratype, NHMD-920098, of Echinoderes abeli sp. nov. from Islas Marias, Mexico. (A) Ventral overview. (B) Segments 1 to 4, ventral view. (C) Segments 1 to 4, dorsal view. (D) Segments 4 to 6, ventral view. (E) Segment 5 to 7, dorsal view. (F) Segments 7 to 10, ventral view. (G) Segments 7 to 8, dorsal view. (H) Detail of segments 10 to 11, ventral view, showing male sexual dimorphism. (I) Detail of segments 10 to 11, dorsal view, showing male sexual dimorphism. (J) Segments 10 to 11, dorsal view, showing female sexual dimorphism. Abbreviations: ldt, laterodorsal tube; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; mdgco1, middorsal glandular cell outlet type 1; mds, middorsal spine; pdgco1, paradorsal glandular cell outlet type 1; pe, penile spine; pl placid; pr, protuberance; sdgco2, subdorsal glandular cell outlet type 2; sdss, subdorsal sensory spots; trp, trichoscalid plate. Digits after abbreviations in lvs, lvt and mds refer to segment number.

Fig. 8 in New Echinoderes (Kinorhyncha: Cyclorhagida) from Mexico: Molecular barcoding demonstrate species delimitation between highly similar morphospecies

Fig. 8. Scanning electron micrographs showing overviews and details of Echinoderes wilberti sp. nov. (A) Ventral overview. (B) Segment 1 to 3, ventral view. (C) Segment 4 to 6, ventral view. (D) Segment 8, ventral view. (E) Segments 9 to 10, ventral view. (F) Segment 11, ventral view. (G) Segments 10 to 11, ventral view. (H) Dorsal overview. (I) Segments 1 to 4, dorsal view. (J) Segments 6 to 10, dorsal view. (K) Segments 10 to 11, dorsal view, showing male sexual dimorphism. (L) Segments 10 to 11, dorsal view, showing female sexual dimorphism; inset shows close-up of laterodorsal tube. Abbreviations: lat, lateral accessory tube; ldss, laterodorsal sensory spot; ldt, laterodorsal tube; ltas, lateral terminal accessory spine; lvs, lateroventral spine; lvt, lateroventral tube; mlss, midlateral sensory spot; pe, penile spine; pl, placid; sdss, subdorsal sensory spot; ste, sternal extension; te, tergal extension; vlss, ventrolateral sensory spot; vmss, ventromedial sensory spot. Digits after abbreviations lvs and lvt refer to segment number.

Fig. 7 in New Echinoderes (Kinorhyncha: Cyclorhagida) from Mexico: Molecular barcoding demonstrate species delimitation between highly similar morphospecies

Fig. 7. Light micrographs showing overviews and details of (A–G) female holotype, NHMD-1176454, female paratype (H–I) NHMD-1176456, and (J) male paratype, NHMD-1176455, of Echinoderes wilberti sp. nov. from Xcalak, Quintana Roo, Mexico. (A) Ventral overview. (B) Segments 1 to 2, ventral view. (C) Segments 1 to 2, dorsal view. (D) Segments 3 to 5, ventral view. (E) Segment 3 to 5, dorsal view. (F) Segments 6 to 8, ventral view. (G) Segments 6 to 8, dorsal view. (H) Segments 9 to 11, ventral view. (I) Segments 9 to 11, dorsal view, showing female sexual dimorphism. (J) Segments 10 to 11, dorsal view, showing male sexual dimorphism. Abbreviations: lat, lateral accessory tube, ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; mdgco1, middorsal glandular cell outlet type 1; pdgco1, paradorsal glandular cell outlet type 1; pe, penile spine; pl placid; pvb, paraventral bristles; sdt, subdorsal tube; ste, sternal extensions; te, tergal extensions; trp, trichoscalid plate; vmgco1, ventromedial glandular cell outlet type 1. Digits after abbreviations lvs and lvt refer to segment number.

Fig. 2 in New Echinoderes (Kinorhyncha: Cyclorhagida) from Mexico: Molecular barcoding demonstrate species delimitation between highly similar morphospecies

Fig. 2. Line art illustrations of Echinoderes abeli sp. nov. (A) Male, dorsal view. (B) Male, ventral view. (C) Segments 10 to 11 in female, dorsal view. (D) Segments 10 to 11 in female, ventral view. Abbreviations: ldss, laterodorsal sensory spot; ldt, laterodorsal tube; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvgco1, lateroventral glandular cell outlet type 1; lvs, lateroventral spine; lvt, lateroventral tube; mdgco1, middorsal glandular cell outlet type 1; mds, middorsal spine; mlt, midlateral tube; pdgco1, paradorsal glandular cell outlet type 1; pdss, paradorsal sensory spot; pe, penile spines; pr, protuberance; pvgco1, paraventral glandular cell outlet type 1; sdgco2, subdorsal glandular cell outlet type 2; sdss, subdorsal sensory spot; si, sieve plate; slss, sublateral sensory spot; slt, sublateral tube; vlss, ventrolateral sensory spot; vmgco1, ventromedial glandular cell outlet type 1; vmss, ventromedial sensory spot.

Fig. 5 in Echinoderes landersi Grzelak & Sørensen 2022, sp. nov.

Fig. 5. Scanning electron micrographs of guard hairs of Rhinopoma microphyllum (A: Dorsal, B: Ventral, C: Neck hairs). R. hardwickii (D: Dorsal, E: Ventral, F: Neck hairs).

Fig. 2 in Echinoderes landersi Grzelak & Sørensen 2022, sp. nov.

Fig. 2. Scanning electron micrographs of guard hairs of Scotophilus kuhlii (A: Dorsal, B: Ventral, C: Neck hairs). S. heathii (D: Dorsal, E: Ventral, F: Neck hairs).

Fig. 14 in Echinoderes galadrielae Grzelak & Sørensen 2022, sp. nov.

Fig. 14. Pleurobranchus iouspi Ev. Marcus (1984), SEM. (A) shell (MNRJ 33069). (B-C) elements of the jaw (SAE ML 95). (D-F) radula. (D) innermost lateral teeth (MNRJ 33069). (E) lateral teeth (SAE ML 95). (F) outermost lateral teeth (MNRJ 33069).

Fig. 16 in Echinoderes galadrielae Grzelak & Sørensen 2022, sp. nov.

Fig. 16. Pleurobranchus iouspi Ev. Marcus (1984), digestive system. (A) foregut sectioned longitudinally from ventral side (SAE ML 95). Abbreviations: a, anus; ca, oral canal; j, jaw plates; in, intestine; m5, accessory dorsal tensor muscle of radula; mj, jaw muscle; oa, opening of the duct of the acid gland; oe, esophagus; ra, radula; rs, radula sac; st, stomach.

Fig. 2 in Echinoderes galadrielae Grzelak & Sørensen 2022, sp. nov.

Fig. 2. Phylogenetic tree of Rhodeus ocellatus in East Asia, based on the cyt b gene by Bayesian inference (BI). Posterior probability for BI and bootstrap value for maximum likelihood (ML) are represented at the nodes. The Roman numerals of biogeographic regions are parenthesized behind haplotypes. The spatial distributions of the lineages are represented in figure 1 with the same color usage.

Fig. 9 in Echinoderes galadrielae Grzelak & Sørensen 2022, sp. nov.

Fig. 9. Echinoderes serratulus sp. nov., Nomarski photomicrographs of holotype female (ZIHU-5053). A, entire animal, ventral view; B, segments 2 and 3, ventral view; C, segments 1 and 2, dorsal view; D, segments 5 and 6, lateroventral view; E, segments 8 and 9, lateroventral view; F, segments 9-11, laterodorsal view; G, segments 10 and 11, ventrolateral view. Dashed circles indicate sensory spots. Abbreviations: gco1, type-1 glandular cell outlet; gco2, type-2 glandular cell outlet; ldt, laterodorsal tubule; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvt, lateroventral tubule; mlt, midlateral tubule; mvp, midventral placid; ppf, primary pectinate fringe; si, sieve plate; sls, sublateral acicular spine; sp, sternal plate.

Fig. 4 in Echinoderes galadrielae Grzelak & Sørensen 2022, sp. nov.

Fig. 4. Echinoderes regina sp. nov., scanning electron micrographs. A, entire animal, lateral view; B, head, lateral view; C, mouth cone, lateral view; D, introvert, lateral view; E, introvert, laterodorsal view. Abbreviations: int, introvert; lts, lateral terminal spine; mc, mouth cone; oos, outer oral style; psc, primary spinoscalid; sec, sector; seg, segment.

Fig. 3 in Echinoderes galadrielae Grzelak & Sørensen 2022, sp. nov.

Fig. 3. Echinoderes regina sp. nov., Nomarski photomicrographs of holotype female (ZIHU-5045). A, entire animal, ventral view; B, segments 2 and 3, ventral view; C, segment 4, dorsal view; D, segments 6 and 7, lateroventral view; E, segment 8, lateroventral view; F, segment 9, sublateral view; G, segments 10 and 11, dorsal view. Dashed circles indicate sensory spots. Abbreviations: gco1, type-1 glandular cell outlet; gco2, type-2 glandular cell outlet; ldt, laterodorsal tubule; ltas, lateral terminal accessory spine; lts, lateral terminal spine; mds, middorsal acicular spine; mvp, midventral placid; si, sieve plate; sls, sublateral acicular spine; slt, sublateral tubule; sp, sternal plate; tp, tergal plate.