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Fig. 2 in Integrative description of two new species of the genus Mesobiotus (Eutardigrada, Macrobiotoidea) from Russia, with an updated phylogeny of the genus

Fig. 2. Mesobiotus efa sp. nov., cuticular sculpture. A–B, D. Paratype (SPbU Tar_33). C. Paratype (SPbU 275(197)). A. High magnification of the sculpture of the dorsal body surface, SEM. B. Dot-like sculpture on the external surface of leg III, SEM. C. Dot-like sculpture on the external surface of leg III, PhC, black arrowhead indicates dots. D. Dot-like sculpture on the dorsal side of hind legs, SEM. Scale bars: A–B, D = 2 µm; C = 5 µm.

Fig. 1 in Integrative description of two new species of the genus Mesobiotus (Eutardigrada, Macrobiotoidea) from Russia, with an updated phylogeny of the genus

Fig. 1. Mesobiotus efa sp. nov., total view. A. Holotype, ♀ (SPbU 275(72)). Dorso-ventral view, black arrowheads indicate eyes, PhC. B. Paratype (SPbU Tar_33). Ventral view in SEM. Scale bars = 50 µm.

Fig. 6 in Integrative description of two new species of the genus Mesobiotus (Eutardigrada, Macrobiotoidea) from Russia, with an updated phylogeny of the genus

Fig. 6. Mesobiotus efa sp. nov., paratype (SPbU Tar_33), eggs. A. Total view of the egg, SEM. B–C. Details of the egg surface, black arrowheads indicate pores on the egg processes, black arrow indicates wrinkles on the egg surface, SEM. D. Egg process, black arrowheads indicate pores, white arrowhead indicates terminal filaments, SEM. Scale bars: A = 20 µm; B = 5 µm; C–D = 2 µm.

Fig. 5 in Integrative description of two new species of the genus Mesobiotus (Eutardigrada, Macrobiotoidea) from Russia, with an updated phylogeny of the genus

Fig. 5. Mesobiotus efa sp. nov., eggs. A–E, H–I. Paratype (SPbU 275(210)). F–G. Paratype (SPbU 275(180)). A. Total view of the optical section of the embryonated egg, PhC. B. Total view of the egg surface, PhC. C. Total view of the egg surface, DIC. D. Details of the egg surface, PhC. E–H. Egg processes, PhC. I. Optical section of the egg process, DIC. Black arrowheads indicate bifurcated tips, white arrowheads indicate terminal and subterminal filaments, black arrow indicates a pore. Scale bars: A–C = 20 µm; D–I = 10 µm.

Fig. 10 in Integrative taxonomy helps to revise systematics and questions the purported cosmopolitan nature of the type species within the genus Diaforobiotus (Eutardigrada: Richtersiusidae)

Fig. 10 Diaforobiotus svalbardicus sp. nov.: eggs seen in PCM: A, D, G focus on egg processes surface; B, E, H focus on egg processes midsections; C, F, I focus on egg surface between processes. Triples A–C, D–F, G–I represent three different eggs photographed with dif-

Fig. 1 in Integrative taxonomy helps to revise systematics and questions the purported cosmopolitan nature of the type species within the genus Diaforobiotus (Eutardigrada: Richtersiusidae)

Fig. 1 Diaforobiotus islandicus (Richters, 1904): habitus and cuticular pores seen in PCM: A adult habitus, dorso-ventral projection (neotype); B, C cuticular pores on dorsal and ventral side of the body, respectively; D pulvinus on the internal surface of leg III. Filled flat arrowheads indicate cuticular bars above the claws in legs I–III. Scale bars inμm

Fig. 8 in Integrative taxonomy helps to revise systematics and questions the purported cosmopolitan nature of the type species within the genus Diaforobiotus (Eutardigrada: Richtersiusidae)

Fig. 8 Diaforobiotus svalbardicus sp. nov.: bucco-pharyngeal apparatus seen in PCM: A dorsal projection of the entire bucco-pharyngeal apparatus; B, C dorsal (B) and ventral (C) views of the oral cavity armature; D, E dorsal (D) and ventral (E) view of macroplacoids. Empty arrows indicate dorsal spikes, filled flat arrowheads indicate the first band of teeth, empty flat arrowheads indicate the second band of teeth, filled indented arrowheads indicate the third band of teeth, empty indented arrowhead indicates the medial tooth in dorsal portion of the third band of teeth whereas filled arrows indicate constrictions in macroplacoids. Scale bars in μm

Fig. 4 in Integrative taxonomy helps to revise systematics and questions the purported cosmopolitan nature of the type species within the genus Diaforobiotus (Eutardigrada: Richtersiusidae)

Fig. 4 Diaforobiotus islandicus (Richters, 1904): eggs seen in PCM: A, C, E focus on egg processes; B, D, F focus on egg surface between processes. Pairs A–B, C–D, E–F represent three different eggs photographed with different focus. Filled flat arrowheads indicate rings of pores surrounding egg processes. Scale bars in μm

Fig. 6 in Integrative taxonomy helps to revise systematics and questions the purported cosmopolitan nature of the type species within the genus Diaforobiotus (Eutardigrada: Richtersiusidae)

Fig. 6 Diaforobiotus svalbardicus sp. nov.: habitus and cuticular pores seen in PCM: A adult habitus, dorso-ventral projection (holotype); B, C cuticular pores on dorsal and ventral side of the body, respectively (holotype). Filled flat arrowheads indicate cuticular bars above the claws in legs I–III. Scale bars in μm

Fig. 12 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 12. Macrobiotus kamilae sp. nov., buccal apparatus and the oral cavity armature seen in PCM (paratypes, IZiBB). A. Dorso-ventral projection of the entire buccal apparatus. B–E. Oral cavity armature visible in dorsal (B, D) and ventral (C, E) views in a large and a small specimen, respectively. F–G. Placoid morphology visible in dorsal (F) and ventral (G) views, respectively. Empty indented arrowheads indicate the second band of teeth in the oral cavity, filled indented arrowheads indicate the third band of teeth in the oral cavity, whereas empty flat arrowheads indicate central constrictions in first macroplacoids and subterminal constriction in second macroplacoids. Scale bars in μm.

Fig. 9 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 9. Macrobiotus kamilae sp. nov., cuticular structures on legs (paratypes, IZiBB). A–B. External granulation on legs III and I seen in PCM (A) and SEM (B), respectively. C–D. A cuticular bulge (pulvinus), granulation and a cuticular fold on the internal surface of leg III seen in PCM (C) and SEM (D). E–F. Granulation on leg IV seen in PCM (E) and SEM (F). Filled indented arrowheads indicate the cuticular bulge, filled flat arrowheads indicate patch of granulation and empty indented arrowheads indicate the cuticular fold under the claws. Scale bars in μm.

Fig. 8 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 8. Macrobiotus kamilae sp. nov., habitus. A. Dorso-ventral projection (holotype, Hoyer's medium, PCM, IZiBB IN.030.08). B–C. Cuticular pores on the dorsal part of the body seen in PCM (B: holotype) and in SEM (C: paratype, IZiBB). Scale bars in μm.

Fig. 5 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 5. Macrobiotus noongaris sp. nov., mouth opening and the oral cavity armature seen in SEM (paratype, IZiBB). A. Mouth opening with peribuccal sensory lobes and ten peribuccal lamellae. B–C. The oral cavity armature of a single paratype seen in SEM from different angles, in dorsal (B) and ventral (C) views, respectively. Empty flat arrowheads indicate the first band of teeth in the oral cavity, empty indented arrowheads indicate the second band of teeth in the oral cavity, filled indented arrowheads indicate the third band of teeth in the oral cavity. Scale bars in μm.

Fig. 2 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 2. Macrobiotus noongaris sp. nov., cuticular structures on legs (paratypes, IZiBB). A–B. External granulation on legs II and III seen in PCM (A) and SEM (B), respectively. C–D. A cuticular bulge (pulvinus) and a faint cuticular fold, covered by granulation, on the internal surface of legs I and III seen in PCM (C) and SEM (D), respectively. E–F. Granulation on leg IV seen in PCM (E) and SEM (F). Filled indented arrowheads indicate the cuticular bulge and empty indented arrowheads indicate the faint cuticular fold under the claws. Scale bars in μm.

Fig. 13 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 13. Macrobiotus kamilae sp. nov., mouth opening and the oral cavity armature seen in SEM (paratype, IZiBB). A. Mouth opening with peribuccal sensory lobes and ten peribuccal lamellae. B–C. The oral cavity armature of a single paratype seen in SEM from different angles, in dorsal (B) and ventral (C) views, respectively. Empty flat arrowheads indicate the first band of teeth in the oral cavity, empty indented arrowheads indicate the second band of teeth in the oral cavity and filled indented arrowheads indicate the third band of teeth in the oral cavity. Scale bars in μm.

Fig. 11 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 11. Macrobiotus kamilae sp. nov., claws. A–B. Claws III and IV seen in PCM, with smooth and dentate lunules, respectively (holotype, IZiBB IN.030.08). C–D. Claws III and IV seen in SEM, with smooth and dentate lunules, respectively (paratype, IZiBB). Filled indented arrowheads indicate double muscle attachments under the claws whereas empty indented arrowhead indicates the horseshoe structure connecting the anterior and the posterior claw. Scale bars in μm.

Fig. 6 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 6. Macrobiotus noongaris sp. nov. A–E. Egg, seen in PCM (IZiBB). A. Midsection under 400 × magnification. B. Surface under 400× magnification. C–D. Midsection under 1000 × magnification. E. Surface and terminal discs under 1000× magnification. F. Testis seen in PCM, with visible spermatozoa in male freshly mounted in Hoyer's medium (paratype, IZiBB). Scale bars in μm.

Fig. 4 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 4. Macrobiotus noongaris sp. nov., buccal apparatus and the oral cavity armature seen in PCM (paratypes, IZiBB). A. Dorso-ventral projection of the entire buccal apparatus. B–C. Oral cavity armature visible in dorsal (B) and ventral (C) views, respectively. D–E. Placoid morphology visible in dorsal (D) and ventral (E) views, respectively. Empty indented arrowheads indicate the second band of teeth in the oral cavity, filled indented arrowheads indicate the third band of teeth in the oral cavity, empty flat arrowheads indicate central constrictions in first macroplacoids and subterminal constriction in second macroplacoids. Scale bars in μm.

Fig. 3 in Two new species of the Macrobiotus hufelandi complex (Tardigrada: Eutardigrada: Macrobiotidae) from Australia and India, with notes on their phylogenetic position

Fig. 3. Macrobiotus noongaris sp. nov., claws (paratypes, IZiBB). A–B. Claws II and IV seen in PCM, with smooth and dentate lunules, respectively. C–D. Claws I and IV seen in SEM, with smooth and dentate lunules, respectively. Filled indented arrowheads indicate double muscle attachments under the claws. Scale bars in μm.