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Fig. 4 in An Integrative Description Of A New Richtersius Species From Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Fig. 4. Richtersius tertius sp. n. mouth opening with peribuccal structures and oral cavity armature of an adult (SEM). A = general view of the mouth opening; B = details of the oral cavity armature. Asterisk indicates the circular sensory field, filled arrow indicates the divided peribuccal velum/lamina, filled flat arrowheads indicate the first band of teeth, empty flat arrowheads indicate the teeth of the second band, dorsal and ventral teeth of

Fig. 1 in An Integrative Description Of A New Richtersius Species From Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Fig. 1. Richtersius tertius sp. n. habitus. A = adult, dorsoventral projection (holotype, PCM); B = hatchling, dorsoventral projection (PCM). Scale bars in μm

Fig. 2 in An Integrative Description Of A New Richtersius Species From Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Fig. 2. Richtersius tertius sp. n. pores. A = pores on the hatchling dorsal cuticle (PCM); B–E = pores on the hatchling dorsal cuticle (SEM). Scale bars in Μm

Fig. 7 in An Integrative Description Of A New Richtersius Species From Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Fig. 7. Richtersius tertius sp. n. egg chorion morphology (SEM). A – entire egg; B–C = Details of egg surface and processes; D = magnification of the egg process. Filled flat arrowheads

Fig. 5 in An Integrative Description Of A New Richtersius Species From Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Fig. 5. Richtersius tertius sp. n. buccal apparatus (PCM). A = dorsal projection of the entire buccal apparatus; B = later view of the buccal crown; C = ventral view of the buccal crown; D = stylet support insertion point of the buccal apparatus; E = macroplacoid morphology visible in ventral view. Filled arrows indicate the ventro-lateral triangular apophysis, filled indented arrowheads indicate dorsal spikes, empty indented arrowheads indicate constrictions in the macroplacoids, the empty arrow indicates the cuticular hook on the dorsal apophysis, the black filled arrow indicates the cuticular hook on the ventral apophysis, filled flat arrowheads indicate the second band of teeth in the oral cavity. Scale bars in Μm

Fig. 3 in An Integrative Description Of A New Richtersius Species From Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Fig. 3. Richtersius tertius sp. n. claws. A–B = claws II and IV (PCM); C–D = claws III and IV (SEM). Filled indented arrowheads indicate lateral expansions positioned posteriorly to the laminar stalk connecting the claw to the lunula, empty indented arrowheads indicate the double muscle attachments under the claws, empty flat arrowheads indicate the divided cuticular bar, filled flat arrowhead indicates the horseshoe structure connecting the

Fig. 6 in An Integrative Description Of A New Richtersius Species From Greece (Tardigrada: Eutardigrada: Richtersiusidae)

Fig. 6. Richtersius tertius sp. n. egg chorion morphology (PCM). A–B = egg midsection un- der 400× magnification; C = egg surface under 1000× magnification; D–E = egg processes midsection under 1000× magnification. Filled flat arrowheads indicate flexible terminal portion of the egg process, filled indented arrowheads indicate the refracting dots covering the egg surface between processes (in the majority of eggs this character is not visible as the

Figure 1 in Mitosis in storage cells of the eutardigrade Richtersius coronifer

Figure 1. Storage cell of Richtersius coronifer with chromosomes in metaphase of the mitotic cycle. Light microscopy. Scale bar: 10 µm.

Figure 3 in Morphological and molecular analyses on Richtersius (Eutardigrada) diversity reveal its new systematic position and lead to the establishment of a new genus and a new family within Macrobiotoidea

Figure 3. Phylogenetic reconstruction of Macrobiotoidea based on combined data set (18S + 28S rRNA sequences) and obtained by Bayesian inference (BI) and maximum likelihood (ML). Values above branches: BI posterior probability values; values under branches: ML bootstrap values (values below 65 are not reported). In bold, newly generated sequences; in grey, clusters of genera or species. *, GenBank sequences (EU266930-1) wrongly attributed on the basis of morphology to Richtersius coronifer.

Figure 2 in Morphological and molecular analyses on Richtersius (Eutardigrada) diversity reveal its new systematic position and lead to the establishment of a new genus and a new family within Macrobiotoidea

Figure 2. Richtersius coronifer (A–D) and Diaforobiotus islandicus (E–J). A, buccal–pharyngeal apparatus, with enlarged terminal portion (arrow) of the buccal tube (neotype) (Norway). B, buccal–pharyngeal apparatus (population from northern Italy 1). C, buccal–pharyngeal apparatus, with the dorsal thickening in the anterior portion of the buccal tube (arrow) (Sweden). D, buccal–pharyngeal apparatus (Greenland). E, F, lateral view of the claws on the second leg at different focus levels. The evident stalk system (arrow) and cuticular pores (arrowhead) on the leg are visible (Norway). G, buccal–pharyngeal apparatus (ventral view), with some strong, scattered round teeth in the buccal armature (arrow) (Italy). H, buccal–pharyngeal apparatus (dorsal view), with the large tooth (arrow) on the internal surface of the buccal tube (Norway). I, buccal–pharyngeal apparatus (lateral view) (Greenland). J, anterior portion of the buccal tube (enlargement of I), with the large tooth on internal surface (arrowhead) and the dorsal thickening (arrow) (Greenland). A, B, D–F, H: phase contrast; C, G, I, J: differential interference contrast. Scale bars = 10 µm.

Figure 1. Richtersius coronifer. A in Morphological and molecular analyses on Richtersius (Eutardigrada) diversity reveal its new systematic position and lead to the establishment of a new genus and a new family within Macrobiotoidea

Figure 1. Richtersius coronifer. A, dorsal cuticle of a newborn with pores (arrows) (population from Sweden). B, cuticular pores of a newborn (arrows) (Sweden). C, cuticular pores of a newborn with irregular margin (arrow) (northern Italy 1). D, cuticular pores of a newborn with regular margin (arrow) (Greenland). E, claws on the second leg in an adult (neotype) (Norway). F, frontal view of the claws on the hind leg with an evident stalk system in an adult (arrow) (Greenland). G, claws on the hind leg in a newborn (Greenland). H, claws on the second leg in an adult (northern Italy 1). I, frontal view of the claws on the first leg with an evident stalk system in an adult (arrow) (Sweden). J, lateral view of the claws on the second leg with an evident stalk system in an adult (arrow) (central Italy). A, B: scanning electron microscopy; C–J: phase contrast. Scale bars: A, C–J = 10 µm, B = 1 µm.