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Fig. 2. Polacanthoderes martinezi, camera lucida drawings. A, B in Taxonomy, genetic diversity, and phylogeny of the Antarctic mud dragon, Polacanthoderes (Kinorhyncha: Echinorhagata: Echinoderidae)

Fig. 2. Polacanthoderes martinezi, camera lucida drawings. A, B, holotype female (ZMB 11237), segments 1–11, dorsal view (A) and ventral view (B); C, D, allotype male (ZMB 11238a), segments 10 and 11, dorsal view (C) and ventral view (D). Abbreviations (ac), acicular spine; gco1/2, type-1/2 glandular cell outlet; LA, lateral accessory; LD, laterodorsal; ltas, lateral terminal accessory spine; lts, lateral terminal spine; LV, lateroventral; MD, middorsal; mdp, middorsal placid; ML, midlateral; mvp, midventral placid; pa, papilla; pe, penile spine; (sac), small acicular spine; SD, subdorsal; se, seta; si, sieve plate; ss, sensory spots (tu), tube; VL, ventrolateral; VM, ventromedial. Digits in the abbreviations (except for gco1/2) indicate the corresponding segment number.

Fig. 5 in Ryuguderes casarrubiosi sp. nov., a new deep-sea representative of the enigmatic genus Ryuguderes (Kinorhyncha: Cyclorhagida: Campyloderidae) from the Indian Ocean

Fig. 5. Light micrographs of female adult holotype NHMD-1174547 (A–E), female adult paratype NHMD-672705 (I) and male adult paratype NHMD- 672702 (F–H) of Ryuguderes casarrubiosi sp. nov., showing trunk cuticular details of segments 6–11. A: Middorsal to midlateral view of segment 8; B: right sternal plate of segment 8; C: midlateral to lateroventral view of segments 9–10; D: middorsal to laterodorsal view of segments 10–11; E: right sternal plates of segments 10–11; F: right sternal plates of segments 6–7; G: middorsal to laterodorsal view of segments 10–11; H: right sternal plates of segments 10–11; I: ventral view of segment 11. Abbreviations: go, gonopore; lane, lateral accessory nephridiopore; lds, laterodorsal spine; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; mds, middorsal spine; mts, midterminal spine; po, pore; spf, secondary pectinate fringe; vmpa, ventromedial papilla; numbers after abbreviation indicate corresponding segment; glandular cell outlets are marked as continuous circles, and sensory spots as dashed circles.

Fig. 1 in Ryuguderes casarrubiosi sp. nov., a new deep-sea representative of the enigmatic genus Ryuguderes (Kinorhyncha: Cyclorhagida: Campyloderidae) from the Indian Ocean

Fig. 1. Map with location of the sampling region (marked with a black star) offshore north-western Madagascar margin at the Mozambique Channel with detail of the studied area (marked with a red square) (A), and detailed bathymetry of the area where the new species was found (red triangle). Map courtesy of Dr Julie Tourolle, created with Globe©, IFREMER. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)

Fig. 2 in Ryuguderes casarrubiosi sp. nov., a new deep-sea representative of the enigmatic genus Ryuguderes (Kinorhyncha: Cyclorhagida: Campyloderidae) from the Indian Ocean

Fig. 2. Line art drawing of Ryuguderes casarrubiosi sp. nov. based on type material. A: Dorsal female trunk overview; B: ventral female trunk overview; C: dorsal view of male segments 10–11; D: mouth cone external ring of outer oral styles. Abbreviations: dis, distal part (of outer oral style); dpl, dorsal placid; go, gonopore; lane, lateral accessory nephridiopore; las, lateral accessory spine; ldgco, laterodorsal glandular cell outlet; lds, laterodorsal spine; ldss, laterodorsal sensory spot; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvb, lateroventral blunt spine; lvgco, lateroventral glandular cell outlet; lvs, lateroventral spine; lvss, lateroventral sensory spot; mds, middorsal spine; mlss, midlateral sensory spot; mts, midterminal spine; mvpl, midventral placid; oos, outer oral style; po, pore; ppdss, paired paradorsal sensory spot; ppf, primary pectinate fringe; pro, proximal part (of outer oral style); S, segment (followed by number of corresponding segment); sdgco, subdorsal glandular cell outlet; sdss, subdorsal sensory spot; spf, secondary pectinate fringe; ts, trichoscalid; tsp, trichoscalid plate; updss, unpaired paradorsal sensory spot; vlgco, ventrolateral glandular cell outlet; vmgco, ventromedial glandular cell outlet; vmpa, ventromedial papilla; vmss, ventromedial sensory spot.

Fig. 3 in Ryuguderes casarrubiosi sp. nov., a new deep-sea representative of the enigmatic genus Ryuguderes (Kinorhyncha: Cyclorhagida: Campyloderidae) from the Indian Ocean

Fig. 3. Light micrographs of female adult holotype NHMD-1174547 (A), female adult paratype NHMD- 672705 (E–G), male adult paratype NHMD-672702 (B, D), male pre-adult specimen NHMD-672704 (H), and J-2 juvenile specimen NHMD-67203 (C, I) of Ryuguderes casarrubiosi sp. nov., showing trunk cuticular overviews and details on head, neck and posterior trunk segments. A: Ventral trunk overview; B: Dorsal trunk overview; C: Ventral trunk overview; D: Outer oral styles; E: detail of the scalid internal septa (indicated with arrows); F: detail of a regularsized introvert scalid; G: Ventral neck view (arrows indicate the placid width at base); H: Dorsal view of segments 10–11; I: Ventral view of segments 8–10. Abbreviations: bs, basal sheath of scalid; dis, distal part (of outer oral styles); ep, end-piece of scalid; lds, laterodorsal spine; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; mds, middorsal spine; mts, midterminal spine; mvpl, midventral placid; pro, proximal part (of outer oral styles); numbers after abbreviation indicate corresponding segment.

Fig. 4 in Ryuguderes casarrubiosi sp. nov., a new deep-sea representative of the enigmatic genus Ryuguderes (Kinorhyncha: Cyclorhagida: Campyloderidae) from the Indian Ocean

Fig. 4. Light micrographs of female adult holotype NHMD-1174547 (A, C–D, F–I) and female adult paratype NHMD-672705 (B, E) of Ryuguderes casarrubiosi sp. nov., showing trunk cuticular details of segments 1–7. A, B: Middorsal to laterodorsal view of segments 1–3 tergal plates; C: detail of the unpaired, paradorsal sensory spot of segment 4; D: detail of the paired paradorsal sensory spots of segment 6; E: ventral view of segments 1–3; F: middorsal to midlateral view of segments 4–5 tergal plates; G: lateroventral view of segments 5–6; H: midlateral to midventral view of segments 6–7 cuticular plates; I: right sternal plate of segment 6. Abbreviations: las, lateral accessory spine; lvb, lateroventral blunt spine; lvs, lateroventral spine; mds, middorsal spine; ppf, primary pectinate fringe; sp, sternal plate; spf, secondary pectinate fringe; tp, tergal plate; vmpa, ventromedial papilla; numbers after abbreviation indicate corresponding segment; glandular cell outlets are marked as continuous circles, and sensory spots as dashed circles.

FIGURE 8 in Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov., two new species of pycnophyid Kinorhyncha (Allomalorhagida: Pycnophyidae) from the Gulf of Mexico

FIGURE 8. Scanning electron micrographs showing general overview and details of the cuticular morphology of a male (A–F) and a female (G–J) non-type specimens of Leiocanthus satanicus sp. nov. A, ventral overview; B, ventral view of the left episternal plate of segment 1; C, ventral view of the left sternal plates of segments 2–3; D, laterodorsal to ventromedial view on right half of cuticular plates of segments 4–5; E, ventral view of the left sternal plates of segments 8–9; F, ventral view of the right sternal plate of segment 10. Scales: A, 100 μm; B–J, 10 μm. Abbreviations: cr, cuticular ridge; gco, glandular cell outlet; lvse, lateroventral seta; ps, penile spine; pvse, paraventral seta; vlse, ventrolateral seta; vmse, ventromedial seta; vmt, ventromedial tube; sensory spots are marked as dashed circles; ♂ indicates the presence of male sexually dimorphic structures.

FIGURE 4 in Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov., two new species of pycnophyid Kinorhyncha (Allomalorhagida: Pycnophyidae) from the Gulf of Mexico

FIGURE 4. Scanning electron micrographs showing general overview and details of the cuticular morphology of a female, non-type specimen of Leiocanthus quinquenudus sp. nov. A, ventrolateral overview; B, laterodorsal to paraventral view on right half of tergal and sternal plates of segments 2–3; C, laterodorsal to paraventral view on right half of tergal and sternal plates of segments 7–8; D, laterodorsal to paraventral view on right half of tergal and sternal plates of segments 5–6; E, laterodorsal to paraventral view on right half of tergal and sternal plates of segments 9–10; F, laterodorsal to ventrolateral view on right half of tergal and sternal plates of segments 4–5; G, laterodorsal to ventrolateral view on right half of tergal and sternal plates of segments 6–7; H, epibiontic Ciliophora on sternal plates of segment 1; I, epibiontic Ciliophora on left sternal plate of segment 5. Scales: A, 100 μm; B–I, 10 μm. Abbreviations: ldse, laterodorsal seta; lvse, lateroventral seta; vlse, ventrolateral seta; vmse, ventromedial seta; sensory spots are marked as dashed circles; ♂/♀ indicate the presence of sexually dimorphic structures.

FIGURE 1. A in Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov., two new species of pycnophyid Kinorhyncha (Allomalorhagida: Pycnophyidae) from the Gulf of Mexico

FIGURE 1. A, Map of the Gulf of Mexico (western Atlantic Ocean) showing sampling areas for Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov. Sampling stations: B, Mobile Bay (Alabama, U.S.A.) and off the mouth of the Mississippi River (Mississippi and Louisiana coasts, U.S.A.); C, off the coast of Campeche (Mexico).

FIGURE 7 in Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov., two new species of pycnophyid Kinorhyncha (Allomalorhagida: Pycnophyidae) from the Gulf of Mexico

FIGURE 7. Light micrographs showing trunk cuticular details of female holotype NHMD-915202 (B, C, E, G, I, K) and male paratype NHMD-915207 (A, D, F, H, J) of Leiocanthus satanicus sp. nov. A, middorsal to paralateral view on left half of tergal plate of segment 1; B, left sternal plate of segment 2; C, left sternal plates of segments 3–4; D, middorsal to laterodorsal view on left half of tergal plates of segments 2–3; E, left sternal plates of segments 5–6; F, middorsal to laterodorsal view on left half of tergal plate of segment 5; G, left sternal plate of segment 8; H, middorsal to laterodorsal view on left half of tergal plates of segments 6–7; I, left sternal plate of segment 9; J, middorsal to laterodorsal view on left half of tergal plate of segment 9; K, dorsal overview of segment 11 (inset shows the bulbous protuberance of a male). Scales: A–K, 20 μm; inset of K, 5 μm. Abbreviations: bla, butterfly–like intracuticular atria; bp, bulbous protuberance; bsj, ball-and-socket joint; ldse, laterodorsal seta; mde, middorsal cuticular elevation; ms, muscular scar; pc, pachycyclus; pdse, paradorsal seta; plse, paralateral seta; pvse, paraventral seta; sdse, subdorsal seta; ss3, type 3 sensory spot; vlse, ventrolateral seta; vmse, ventromedial seta; glandular cell outlets as closed circles, and sensory spots as dashed circles; ♂/♀ indicate the presence of sexually dimorphic structures.

FIGURE 2 in Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov., two new species of pycnophyid Kinorhyncha (Allomalorhagida: Pycnophyidae) from the Gulf of Mexico

FIGURE 2. Line art illustrations of adult Leiocanthus quinquenudus sp. nov. A, male in ventral view; B, male in dorsal view; C, female segment 2 in ventral view; D, female segments 10–11 in ventral view. Scale: 100 μm. Abbreviations: bla, butterfly-like atrium; bsj, ball-and-socket joint; cr, cuticular ridge; dpl, dorsal placid; gco, glandular cell outlet; ldse, laterodorsal seta; ldss, laterodorsal sensory spot; lts, lateral terminal spine; lvne, lateroventral nephridiopore; lvse, lateroventral seta; mde, middorsal elevation; ms, muscular scar; pc, pachycyclus; pdse, paradorsal seta; pdss, paradorsal sensory spot; ppf, primary pectinate fringe; ps, penile spine; S, segment (followed by number of corresponding segment); sdgco, subdorsal glandular cell outlet; sdss, subdorsal sensory spot; spf, secondary pectinate fringe; ss3, type 3 sensory spot; vlgco, ventrolateral glandular cell outlet; vlse, ventrolateral seta; vlss, ventrolateral sensory spot; vmgco, ventromedial glandular cell outlet; vmse, ventromedial seta; vmss, ventromedial sensory spot; vmt, ventromedial tube; vpl, ventral placid.

FIGURE 3 in Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov., two new species of pycnophyid Kinorhyncha (Allomalorhagida: Pycnophyidae) from the Gulf of Mexico

FIGURE 3. Light micrographs showing trunk overview and the main trunk cuticular details of female holotype NHMD-915196 (A, C–D, F–G) and male paratype NHMD-915197 (B, E, H–J) of Leiocanthus quinquenudus sp. nov. A, ventral overview; B, middorsal to laterodorsal view on left half of tergal plate of segment 1; C, left sternal plate of segment 2; D, middorsal to laterodorsal view on left half of tergal plates of segments 2–3; E, left sternal plate of segment 2; F, left sternal plates of segments 5–6; G, middorsal to laterodorsal view on left half of tergal plates of segments 8–9; H, left sternal plates of segments 7–8; I, left sternal plate of segment 10; J, left sternal plate of segment 9. Scales: A, 100 μm; B–J, 20 μm. Abbreviations: bla, butterflylike atrium; bsj, ball-and-socket joint; ldse, laterodorsal seta; lvse, lateroventral seta; mde, middorsal elevation; ms, muscular scar; pc, pachycyclus; pdse, paradorsal seta; ps, penile spine; spf, secondary pectinate fringe; vlse, ventrolateral seta; vmse, ventromedial seta; vmt, ventromedial tube; glandular cell outlets are marked as closed circles, and sensory spots as dashed circles; ♂/♀ indicate the presence of sexually dimorphic structures.

FIGURE 5 in Leiocanthus quinquenudus sp. nov. and L. satanicus sp. nov., two new species of pycnophyid Kinorhyncha (Allomalorhagida: Pycnophyidae) from the Gulf of Mexico

FIGURE 5. Line art illustrations of adult Leiocanthus satanicus sp. nov. A, male in ventral view; B, male in dorsal view; C, female segment 2 in ventral view; D, female segments 10–11 in ventral view. Scale: 100 μm. Abbreviations: bla, butterflylike atrium; bp, bulbous protuberance; bsj, ball-and-socket joint; cr, cuticular ridge; dle, dagger-like extension; dpl, dorsal placid; gco, glandular cell outlet; ldse, laterodorsal seta; ldss, laterodorsal sensory spot; lvse, lateroventral seta; mde, middorsal elevation; ms, muscular scar; pc, pachycyclus; pdse, paradorsal seta; pdss, paradorsal sensory spot; plse, paralateral seta; plss, paralateral sensory spot; ppf, primary pectinate fringe; ps, penile spine; pvse, paraventral seta; S, segment (followed by number of corresponding segment); sdgco, subdorsal glandular cell outlet; sdse, subdorsal seta; sdss, subdorsal sensory spot; ss3, subdorsal type 3 sensory spot; spf, secondary pectinate fringes; vlse, ventrolateral seta; vlss, ventrolateral sensory spot; vmgco, ventromedial glandular cell outlet; vmse, ventromedial seta; vmss, ventromedial sensory spot; vmt, ventromedial tube; vpl, ventral placid.

FIGURE 10 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 10. Echinoderes goku sp. nov., last juvenile stage moulting to female, ZMB 12267, dorsal view (A, B) and optical section (C). A. Segments 7–10. B, C. Segments 10 and 11. Abbreviations: co, sublateral, subcuticular conical structure opening on segment 10; fe, refers to female character; juv, refers to character of last juvenile stage; las, lateral accessory spine; lts, lateral terminal spine; mds, middorsal spine; ps, postmarginal spicula; re, cuticular reinforcement; s, segment; slt, sublateral tube. Digits after abbreviations indicate the corresponding segment number. Arrowheads in A mark papillate sensory spots. Scale bar in A 50 µm. Scale bar in B 30 µm, valid for B and C.

FIGURE 7 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 7. Echinoderes goku sp. nov., female, ZMB 12271 (A–E) and ZMB 12349 (F), right side (A–D) and dorsal view (E, F), SEM. A. Segments 1–3. B. Segments 4–6. C. Segments 7–8. D. Segments 9–11. E. Segments 10 and 11. F. Fringe of sublateral, subcuticular conical structure opening on segment 10. Abbreviations: co, fringe of sublateral, subcuticular conical structure opening on segment 10; gc1, type-1 gland cell outlet; hr, trunk cuticular hair; lat, lateral accessory tube; ltas, lateral accessory terminal spine; lts, lateral terminal spine; lvs, lateroventral spine; mds, middorsal spine; pf, primary pectinate fringe; s, segment; sdt, subdorsal tube (lost on segment 2); sf, secondary pectinate fringe; slt, sublateral to midlateral tube; te, tergal extension. Digits after abbreviations indicate the corresponding segment number. Arrowheads mark type-1 sensory spots. Scale bar in A–E 10 μm. Scale bar in F 5 µm.

FIGURE 6 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 6. Echinoderes goku sp. nov., female, ZMB 12271 (A, C) and ZMB 12272 (B), in laterodorsal (A), ventral (B), and dorsal-right (C) view, SEM. A. Habitus. B. Mouth cone. White arrow points to bifurcated tip of posterior spinose process. C. Two neighbouring introvert sector. Abbreviations: asp, anterior spinose process; in, introvert; ltas, lateral terminal accessory spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; mc, mouth cone; mds, middorsal spine; oos, outer oral style; psc, primary spinoscalid; psp, posterior spinose process; s, segment; sc, spinoscalid; slt, sublateral tube; tr, trichoscalid. Digits after abbreviations indicate the corresponding segment (A) or introvert ring number (C). Scale bar in A 100 μm. Scale bar in B and C 10 μm.

FIGURE 5 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 5. Female specimens of species of Echinoderes, dorsal view (A, B, H, I, L–N), lateral view (C, K), and optical section (D–G, J), DIC. A–E. Echinoderes goku sp. nov. A, B. paratype ZMB 12335, segments 1–5 (A) and 6–9 (B). C. Paratype ZMB 12344, segments 2–7. D, E. Paratypes ZMB 12342 (D) and ZMB 12264 (E), segments 10 and 11 (D) and 10 (E). F–N. Segments 10 and 11. F, G. Echinoderes capitatus, ZMB 11913 (F) and 11921 (G). H, I. Echinoderes meteorensis, paratypes ZMB 11571b (H) and ZMB 11572b (I). J. Echinoderes unispinosus, paratype ZMB 11589b. K, L. Echinoderes apex, holotype ZMB 11561, paratype ZMB 11562a. M. Echinoderes ferrugineus, ZMB 11929. N. Echinoderes pilosus, paralectotype SMNH 9256; black arrow marks cuticular sheath around tube. Abbreviations: co, female-specific sublateral, subcuticular conical structure; gc1, type-1 gland cell outlet; ldt, laterodorsal tube; ltas, lateral accessory terminal spine; lts, lateral terminal spine; lvs, lateroventral spine; lvt, lateroventral tube; mds, middorsal spine; re, cuticular reinforcement; s, segment; sdt, subdorsal tube; slt, sublateral tube; sph, laterodorsal subcuticular spherical structure; vlt, ventrolateral tube. Digits after abbreviations indicate the corresponding segment number. Arrowheads mark type-1 sensory spots. White arrows point to type-1 gland cell outlets. Scale bar in B 50 μm, valid for A–C. Scale bar in D 20 µm, valid for D–M. Scale bar in N 20 µm.

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.