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Figure 2 from: Vončina K, Kristensen RM, Gąsiorek P (2020) Pseudechiniscus in Japan: re-description of Pseudechiniscus asper Abe et al., 1998 and description of Pseudechiniscus shintai sp. nov. Zoosystematics and Evolution 96(2): 527-536. https://doi.org/10.3897/zse.96.53324

Figure 2 Sculpturing of Pseudechiniscus asper (PCM): A – dorsal; B – ventral. White arrowheads indicate thickenings at the lateral positions C and D, black arrowheads indicate claw spurs and empty arrows indicate papillae IV. Scale bars: in μm.

Figure 1 from: Vončina K, Kristensen RM, Gąsiorek P (2020) Pseudechiniscus in Japan: re-description of Pseudechiniscus asper Abe et al., 1998 and description of Pseudechiniscus shintai sp. nov. Zoosystematics and Evolution 96(2): 527-536. https://doi.org/10.3897/zse.96.53324

Figure 1 Habitus of Pseudechiniscus asper (PCM): A, B – females; C – male hologenophore. Insert shows claws III. Arrowheads indicate thickenings at the lateral positions C and D. List of abbreviations: c – caudal plate, cA – cirrus A, ce – cirrus externus, ci – cirrus internus, cp – cephalic plate, m1–3 – median plates, ps – pseudosegmental plate IV', sI–II – paired segmental plates, sc – scapular plate. Scale bars: in μm.

Figure 4 from: Vončina K, Kristensen RM, Gąsiorek P (2020) Pseudechiniscus in Japan: re-description of Pseudechiniscus asper Abe et al., 1998 and description of Pseudechiniscus shintai sp. nov. Zoosystematics and Evolution 96(2): 527-536. https://doi.org/10.3897/zse.96.53324

Figure 4 Sculpturing of Pseudechiniscus shintai sp. nov. (PCM): A – dorsal; B – ventral. Scale bars: in μm.

Figure 5 from: Vončina K, Kristensen RM, Gąsiorek P (2020) Pseudechiniscus in Japan: re-description of Pseudechiniscus asper Abe et al., 1998 and description of Pseudechiniscus shintai sp. nov. Zoosystematics and Evolution 96(2): 527-536. https://doi.org/10.3897/zse.96.53324

Figure 5 Schematic drawings of ventral sculpturing patterns: A – Pseudechiniscus asper; B – Pseudechiniscus shintai sp. nov.

FIGURE 15 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 15. Phylogenetic tree based on COI sequences prepared by Grobys et al. (2020) with updated names of the species described in this study. Support values (above 50%) for the tree were assessed with 1,000 bootstrap replicates and are marked at the nodes. Species names in square brackets are GenBank labels that are incorrect species identifications, uncertain identifications, or invalid names (correct identifications are provided before square brackets).

FIGURE 12 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 12. Pseudechiniscus lacyformis sp. nov., male—A—dorsal image of the entire animal; (paratype, PCM); B—focus on head and scapular plate (scp) (paratype, PCM); C—characteristic pattern on the ventral side of the body (paratype, PCM); D—focus on characteristic pattern on the ventral side of the body (patch of granulation IV) (paratype, PCM); E—claws and granulation on leg III (paratype, PCM). Scale bars in micrometres [μm].

FIGURE 11 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 11. Pseudechiniscus lacyformis sp. nov., female—A—granulation and papillae (arrow) on leg IV (holotype, PCM); B—claws and granulation of leg I (holotype, PCM). Scale bars in micrometres [μm].

FIGURE 10 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 10. Pseudechiniscus lacyformis sp. nov., female—A—dorsal image of the entire animal; empty arrow indicates a median longitudinal fold dividing scapular plate (scp) into two parts, filled indented arrowheads indicate transverse folds dividing plates m1 and m2 in two portions, filled arrows indicate stripes (folds) on plates s1 and s2, empty indented arrowhead indicates straight pseudosegmental plate (psp), filled arrowhead indicates Y-shaped bifurcated ridges on caudal plate (cap); asterisk indicates visible lateral, small plate-like structure separated from the scapular plate (scp) (holotype, PCM); B—characteristic pattern on the ventral side of the body; asterisk indicates female gonopore (holotype, PCM); C—focus on scapular plate (scp); empty arrow indicates a median longitudinal fold dividing scapular plate (scp) into two parts, filled arrow indicates stripes (folds) on plates (holotype, PCM); D—focus on pseudosegmental plate (psp); filled arrows indicate stripes (folds) on plates (holotype, PCM); E—focus on characteristic pattern on the ventral side of the body (holotype, PCM). Scale bars in micrometres [μm].

FIGURE 9 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 9. Pseudechiniscus angelusalas sp. nov., male—A—lateral view of the entire animal; (paratype, PCM); B—focus on dorsal plates with visible upper ends of cuticular pillars (paratype, PCM); C—focus on ventral patches of granulation IV and VI (paratype, PCM); D—granulation on leg III (paratype, PCM). Scale bars in micrometres [μm].

FIGURE 7 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 7. Pseudechiniscus angelusalas sp. nov., female—A—dorsal image of the entire animal; empty arrow indicates a median longitudinal fold dividing scapular plate (scp) into two parts, filled indented arrowheads indicate transverse folds dividing plates m1 and m2 in two portions, filled arrows indicate stripes (folds) on plates m1 and m2, empty indented arrowhead indicates straight pseudosegmental plate (psp), filled arrowhead indicates Y-shaped bifurcated ridges on caudal plate (cap) (paratype, PCM); B—characteristic pattern on the ventral side of the body (holotype, PCM); C—focus on upper ends of cuticular pillars connected by striae in dorsal plates (paratype, PCM); D—characteristic pattern on the ventral side of the body (holotype, PCM). Scale bars in micrometres [μm].

FIGURE 5 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 5. Pseudechiniscus dastychi sp. nov., female—A–B—dorsal image of the entire animal; empty arrow indicates a median longitudinal fold dividing scapular plate (scp) into two parts, filled indented arrowheads indicate transverse folds dividing plates m1 and m2 in two portions, empty indented arrowhead indicates straight pseudosegmental plate (psp), filled arrowhead indicates Y-shaped bifurcated ridges on caudal plate (cap) (holotype, PCM and paratype, SEM respectively); C–D—characteristic pattern on the ventral side of the body; asterisks indicate female gonopore (holotype, PCM and paratype, SEM). Scale bars in micrometres [μm].

FIGURE 4 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 4. Pseudechiniscus ehrenbergi sp. nov., male—A–B—dorsal image of the entire animal; (paratypes, PCM and SEM respectively); C—focus on dorsal paired plates with visible upper ends of cuticular pillars (paratype, PCM); D—focus on characteristic pattern on the ventral side of the body (paratype, PCM); E—characteristic pattern on the ventral side of the body (paratype, PCM); F—granulation on leg I, arrowhead indicates papilla-like structure (paratype, PCM). Scale bars in micrometres [μm].

FIGURE 3 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 3. Pseudechiniscus ehrenbergi sp. nov., female—A—lateral, small plate-like structure separated from the scapular plate (scp) (paratype, PCM); B—focus on dorsal paired plates with visible upper ends of cuticular pillars (holotype, PCM); C—granulation on leg I, arrowhead indicates papilla-like structure (paratype, PCM); D—granulation and papillae (arrow) on leg IV (paratype, PCM); E—claws of leg I (PCM, paratype). Scale bars in micrometres [μm].

FIGURE 2 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 2. Pseudechiniscus ehrenbergi sp. nov., female—A–B—dorsal image of the entire animal; empty arrow indicates a median longitudinal fold dividing scapular plate (scp) into two parts, filled indented arrowheads indicate transverse folds dividing plates m1 and m2 in two portions, filled arrows indicate stripes (folds) on plates s1 and s2, empty indented arrowhead indicates straight pseudosegmental plate (psp), filled arrowhead indicates Y-shaped bifurcated ridges on caudal plate (cap) (holotype, PCM and paratype, SEM respectively); C–D—characteristic pattern on the ventral side of the body; asterisks indicate female gonopore, filled arrowheads indicate papilla-like structures on leg I (paratypes, PCM and SEM, respectively). Scale bars in micrometres [μm].

FIGURE 1. A in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 1. A schematic illustration of ventral patterns of Pse. suillus and all described Pseudechiniscus species presented in this study. PG I–VIII—patches of granulation I–VIII.

FIGURE 14 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 14. Pseudechiniscus indistinctus sp. nov., female—A—focus on upper ends of cuticular pillars connected by striae in dorsal plates (cap) (paratype, PCM); B—granulation and papillae (arrow) on leg IV (paratype, PCM); C—claws and granulation of leg II (paratype, PCM). Scale bars in micrometres [μm].

FIGURE 8 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 8. Pseudechiniscus angelusalas sp. nov., female—A—granulation on leg III (paratype, PCM); B—granulation and papillae (arrow) on leg IV (paratype, PCM); C—claws of leg III (PCM, paratype). Scale bars in micrometres [μm].

FIGURE 6 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 6. Pseudechiniscus dastychi sp. nov., female—A—W-shaped pattern on the cephalic plate (cp) (arrowhead) (paratype, SEM); B—focus on ventral pattern between IV and V patches of granulation (holotype, PCM); C—granulation on leg II (paratype, PCM); D—granulation and papillae (arrow) on leg IV (paratype, PCM); E—claws of leg I (PCM, paratype); F—claws of leg II (SEM, paratype). Scale bars in micrometres [μm].

FIGURE 13 in Integrative description of five Pseudechiniscus species (Heterotardigrada Echiniscidae: the suillus-facettalis complex)

FIGURE 13. Pseudechiniscus indistinctus sp. nov., female—A–B—dorsal image of the entire animal; empty arrow indicates a median longitudinal fold dividing scapular plate (scp) into two parts, filled indented arrowheads indicate transverse folds dividing plates m1 and m2 in two portions, filled arrows indicate stripes (folds) on plates s1 and s2, empty indented arrowhead indicates straight pseudosegmental plate (psp), filled arrowhead indicates Y-shaped bifurcated ridges on caudal plate (cap) (holotype, PCM and paratype, SEM respectively); C–D—characteristic pattern on the ventral side of the body; asterisks indicate female gonopore, indented arrowhead indicates lateral, small plate-like structure separated from the scapular plate (scp) (paratypes, PCM and SEM, respectively). Scale bars in micrometres [μm].