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FIGURE 2 in A new species of Echinoderes (Kinorhyncha: Cyclorhagida: Echinoderidae) from the Argentinean continental shelf with notes on its postembryonic development and on subcuticular morphological characters unreported for Kinorhyncha

FIGURE 2. Line art illustrations of Echinoderes goku sp. nov., A, B, male holotype (MACN-In 43755), C, D, female paratype (MACN-In 43756b). A. Dorsal view. B. Ventral view. C, D. Segments 10 and 11, dorsal (C) and ventral view (D). Placids illustrated as appearing in SEM. Sublateral structures often hidden by the neighbouring body cuticle in the more or less dorsoventral mount and often only illustrated for one side. Abbreviations: co, female-specific, subcuticular conical structure; hr, cuticular hair; lat, lateral accessory tube; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; mdgc, middorsal gland cell outlet; mds, middorsal spine; pa, pachycycli; pe, penile spine; pl, placid; pvp, paraventral patch of cuticular hairs; sdt, subdorsal tube; slt, sublateral to midlateral tube; te, tergal extension; vlp, ventrolateral to paraventral patch of cuticular hairs; vlt, ventrolateral tube; vmss, ventromedial sensory spot. Digits after abbreviations indicate the corresponding segment number. Scale bar: 100 μm.

FIGURE 3 in A new species of Echinoderes (Kinorhyncha: Cyclorhagida: Echinoderidae) from the Argentinean continental shelf with notes on its postembryonic development and on subcuticular morphological characters unreported for Kinorhyncha

FIGURE 3. Echinoderes goku sp. nov., male paratype ZMB 12334 (A, C), juvenile non-type ZMB 12347 (B, D), and male holotype MACN-In 43755 (E–J), in ventral (A), lateral (B, D), and dorsal view (C, E–J), DIC. A–D. Habitus of specimens infected with fungus before (A, B) and after treatment with formaldehyde for two weeks (C, D). E. Segments 1–5. F, J. Segments 6–9 at different focal levels. G–I. Segments 10 (G), 10 and 11 (H), and 11 (I) at different focal levels. Abbreviations: fu, fungus; hr, trunk cuticular hair; mds, middorsal spine; pa, pachycycli; pl, placid; ppf, primary pectinate fringe; s, segment; sdt, subdorsal tube; slt, sublateral tube. Digits after abbreviations indicate the corresponding segment number. Arrowheads mark type-1 sensory spots. Arrows point to type-1 gland cell outlets. Scale bar in D 100 μm, valid for A–D. Scale bar in F 50 µm, valid for E–J.

FIGURE 9 in A new species of Echinoderes (Kinorhyncha: Cyclorhagida: Echinoderidae) from the Argentinean continental shelf with notes on its postembryonic development and on subcuticular morphological characters unreported for Kinorhyncha

FIGURE 9. Echinoderes goku sp. nov., last juvenile stage moulting to female, ZMB 12267, ventral (B–E), optical section (A, F), and dorsal side (G, H). A. Habitus. B. Segments 1–4. C, D. Segments 5–8 at different focal levels showing aspects of the juvenile (C) and adult (D) cuticle. E. Segments 8–11. F. Segments 9–11. G. Segments 1–4. H. Segments 4–7. Abbreviations: bs, button-like structures; fe, refers to female character; juv, refers to character of last juvenile stage; lat, lateral accessory tube; ltas, lateral accessory terminal spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; mds, middorsal spine; mv, midventral articulation of sternal plates; mvpl, midventral placid; ps, postmarginal spicula; s, segment; vlt, ventrolateral spine. Digits after abbreviations indicate the corresponding segment number. Scale bar in A 100 µm. Scale bar in F 50 µm, valid for B–H.

FIGURE 8 in A new species of Echinoderes (Kinorhyncha: Cyclorhagida: Echinoderidae) from the Argentinean continental shelf with notes on its postembryonic development and on subcuticular morphological characters unreported for Kinorhyncha

FIGURE 8. Echinoderes goku sp. nov., male (ZMB 12350, A) and female (ZMB 12271, B–F), right side (A) and ventral view (B–F), SEM. A. Segment 11 with penile spines. B. Segments 10–11. C. Segments 1–3. D. Segments 4–6. E. Segments 7 and 8. F. Segment 9–11. Abbreviations: dv, attachment site of dorsoventral muscle; lat, lateral accessory tube; ltas, lateral accessory terminal spine; lts, lateral terminal spine; lvs, lateroventral spine; peb, broad penile spine; pet, tubular penile spine; pf, primary pectinate fringe; pvp, paraventral patch of short cuticular hairs; s, segment; sf, secondary pectinate fringe; te, tergal extension; vlt, ventrolateral tube. Digits after abbreviations indicate the corresponding segment number. Arrowheads mark type-1 sensory spots. Scale bar in A–F 10 μm.

FIGURE 4 in A new species of Echinoderes (Kinorhyncha: Cyclorhagida: Echinoderidae) from the Argentinean continental shelf with notes on its postembryonic development and on subcuticular morphological characters unreported for Kinorhyncha

FIGURE 4. Echinoderes goku sp. nov., male holotype MACN-In 43755 (A–C), male paratype ZMB 12318 (D, F–H) and female paratypes ZMB 12337 (E), ZMB 12265 (I, K), and MACN-In 43756b (J), ventral view (A–E, I, K), dorsal view (F–H), and optical section (J), extended focus image from four images (D, K), DIC. A. Segments 1–6. B. Segments 7–10. C. Segments 9–11. D. Segments 1–4. E. Segment 10. F–H. Segments 10 and 11 at different focal levels. I, J. Segments 8–11. K. Mouth cone with outer oral styles. Abbreviations: bs, button-like structures; lat, lateral accessory tube; ltas, lateral accessory terminal spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; mvpl, midventral placid; oos, outer oral style; ov, ovarium with egg; pa, pachycycli; peb, broad penile spine; pet, tubular penile spine; pvp, paraventral patch of short cuticular hairs; re, cuticular reinforcement; s, segment; slt, sublateral tube; te, tergal extension; vlt, ventrolateral tube. Digits after abbreviations indicate the corresponding segment number. Arrowheads mark type-1 sensory spots. Arrows point to type-1 gland cell outlets. Scale bar in B 50 μm, valid for A–D, I, J. Scale bar in G 50 µm, valid for F, G. Scale bar in H 20 µm. Scale bar in K 30 µm, valid for E, K.

FIGURE 35. Chaetozone donerae n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 35. Chaetozone donerae n. sp. Holotype (USNM 1661219): A, entire worm; B, anterior end, dorsal view. Paratype (USNM 1661243): C, posterior end, dorsal view; D, pygidial disk, dorsal view; E, posterior parapodium, anterior view, with acicular spines and capillaries. SEMs (USNM 1661226): F–G, acicular spines and capillaries from posterior neuropodium. A–E, stained with Shirlastain A.

FIGURE 36 in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 36. Chaetozone hystricosa. SEMS, (MCZ 161950): A, anterior end, right lateral view; B, anterior end, left lateral view, inset of nuchal organ (not to scale); C, mid-body segments, lateral view; D, posterior segments and pygidium, lateral view; E, posterior segments and pygidium, dorsal view; F, two far posterior setigers with acicular spines and capillaries, lateral view; G, capillary notoseta from an anterior setiger; H, neuroacicular spines and capillaries from a far posterior setiger.

FIGURE 40. Chaetozone profunda n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 40. Chaetozone profunda n. sp. A, entire worm, left lateral view; B, anterior end, right lateral view; C, anterior end, dorsal view; D, posterior end, dorsal view; E, anterior end, right lateral view; F, posterior parapodium with acicular spines and capillaries, anterior view; G, notoacicular spines and capillaries from (F); H, neuroacicular spines and capillaries from (F); I, detail of neuroacicular spines and capillary from (H).A, D–E holotype (USNM 1661492); B, paratype (USNM 1661497); C, paratype USNM 1661494); F–I, paratype (USNM 1661495).

FIGURE 29. Chaetozone paucispinosa n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 29. Chaetozone paucispinosa n. sp. Holotype (USNM 1661244): A, anterior end, dorsal view; B, anterior end, ventral view; C, anterior end, right lateral view. Paratype (USNM 1661266): D–G, neuropodial acicular spines.

FIGURE 39. Chaetozone profunda n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 39. Chaetozone profunda n. sp. A, anterior end, dorsal view; B, anterior end, left lateral view. A: paratype (USNM 1661502); B: USNM (USNM 1661539).

FIGURE 24. Chaetozone castouria n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 24. Chaetozone castouria n. sp. Paratype (USNM 1660996): A, anterior end, dorsal view; B, anterior end, ventral view; C–E, neuropodial acicular spines.

FIGURE 20. Chaetozone artaspinosa n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 20. Chaetozone artaspinosa n. sp. Paratypes (MCZ 161935): A, entire worm, dorsal view; B, anterior end dorsal view; C, anterior end, dorsal view; D, posterior setiger, anterior view; E, posterior end, left lateral view; F, posterior end, dorsal view. A–B, D–F, stained with Shirlastain A; C, stained with MG.

FIGURE 23. Chaetozone artaspinosa n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 23. Chaetozone artaspinosa n. sp. Juveniles (MCZ 161940): A, 10-setiger post-larva; B, 11-setiger post-larva; C, 12-setiger juvenile; D, 13-setiger juvenile; E, 13-setiger juvenile; F, 19-setiger juvenile; G, 22-setiger juvenile; H, 25-setiger juvenile; I, 28-setiger juvenile. All stained with Shirlastain A.

FIGURE 26. Chaetozone castouria n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 26. Chaetozone castouria n. sp. Paratype (USNM 1660991); A, entire worm, right lateral view. B–D, paratype (USNM 1660997): acicular spines and capillaries. A, Stained with Shirlastain A.

FIGURE 17 in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 17. Chaetozone anasima. SEMs (MCZ 161932): A, anterior end, dorsal view; B, anterior end, right lateral view (inset with nuchal organ, not to scale); C, middle body segments, right lateral view; D, posterior segments, right lateral view; E, posterior end, right lateral view; F, pygidium, ventrolateral view; G, posterior segments, dorsal view; H, neuroacicular spines and capillaries.

FIGURE 11. Chaetocirratulus sandersi n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 11. Chaetocirratulus sandersi n. sp. Holotype (USNM 1660938): A, anterior and middle sections of body in dorsal view showing damaged section; B, posterior end, dorsal view; C, two acicular spines and one capillary from posterior neuropodium; D, detail of neuropodial acicular spine. A–B stained with Shirlastain A.

FIGURE 34. Chaetozone donerae n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 34. Chaetozone donerae n. sp. Paratype (USNM 1661243): A, anterior end, dorsal view; B, posterior end, dorsal view.

FIGURE 10. Chaetocirratulus sandersi n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 10. Chaetocirratulus sandersi n. sp. Holotype (USNM 1660938): A, anterior end, dorsal view; B, anterior end, ventral view; C, anterior end, dorsal view; D, same, ventral view. A–B, stained with Shirlastain A; C–D stained with MG.

FIGURE 38. Chaetozone lophia n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 38. Chaetozone lophia n. sp. A, anterior end, left lateral view; B, posterior end with pygidial disk, dorsal view; C, anterior end, dorsal view; D, posterior end, dorsal view; E, anterior end, dorsal view; F, anterior end, dorsal view; G, posterior parapodium, anterior view; H, two notopodial acicular spines and a capillary from (G); I, neuropodial acicular spine and capillary from (G). A–E stained with Shirlastain A; F stained with MG. A–B, paratypes (USNM 1661377); C–D, holotype (USNM 1661375); E–F, paratypes (USNM 1661376); G–I, paratypes (USNM 1661380).

FIGURE 9. Chaetocirratulus hessleri n in New species and records of Caulleriella, Chaetocirratulus and Chaetozone (Annelida, Cirratulidae) from continental shelf and slope depths of the Western North Atlantic Ocean

FIGURE 9. Chaetocirratulus hessleri n. sp. Holotype (USNM 1660936): A, anterior end, left lateral view; B, posterior end, dorsal view; C, anterior end, right dorsolateral view; D, anterior, ventral view; E, anterior end, dorsolateral view; F, anterior end, left lateral view. A–D stained with Shirlastain A; E–F stained with MG. Arrows in A, C, and D denote pigment.