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FIGURE 6. Lamproderma arcyrionema Rostaf. A in Revision of the Donald T. Kowalski's collections of Lamproderma (Myxomycetes, Amoebozoa) reveals twice higher species diversity

FIGURE 6. Lamproderma arcyrionema Rostaf. A. Sporocarp (note long stalk and golden colours). B. Open sporocarp with visible collar at the base of the sporotheca. C. Columella and capillitium in transmitted light (note dark brown capillitium originating from the top of the columella by primary branches). D. Spores in transmitted light (edge view). E. Spores (top view, note groups of larger warts). F. Spores by SEM. G. Details of spore ornamentation by SEM. Bars: A–B = 1 mm, C = 100 μm, D–E = 10 μm, F = 5 μm, G—2 μm. A: coll. DTK 8878, B–G: coll. DTK 8883.

FIGURE 19. Lamproderma sauteri var. atrogriseum Meyl. A. Sporocarps. B. Open sporocarp. C in Revision of the Donald T. Kowalski's collections of Lamproderma (Myxomycetes, Amoebozoa) reveals twice higher species diversity

FIGURE 19. Lamproderma sauteri var. atrogriseum Meyl. A. Sporocarps. B. Open sporocarp. C. Columella and capillitium in transmitted light. D. Spores in transmitted light (edge view). E. Spores in transmitted light (top view). F. Spore by SEM. G. Details of spore ornamentation by SEM. Bars: A–B = 1 mm, C = 500 μm, D–F = 10 μm, G = 3 μm. A, C: coll. DTK 7073, B, F–G: coll. DTK 7116, D–E: coll. DTK 7145.

FIGURE 18. Lamproderma retirugisporum G. Moreno, H. Singer, C. Illana et A in Revision of the Donald T. Kowalski's collections of Lamproderma (Myxomycetes, Amoebozoa) reveals twice higher species diversity

FIGURE 18. Lamproderma retirugisporum G. Moreno, H. Singer, C. Illana et A. Sánchez A. Sporocarps. B. Open sporocarp. C. Columella and capillitium in transmitted light (note few anastomoses). D. Spores in transmitted light (edge view). E. Spores in transmitted light (top view). F. Spore by SEM. G. Details of spore ornamentation by SEM. Bars: A–B = 1 mm, C = 500 μm, D–F = 10 μm, G = 3 μm. A–G: coll. DTK 7072.

FIGURE 12. Lamproderma kowalskii A in Revision of the Donald T. Kowalski's collections of Lamproderma (Myxomycetes, Amoebozoa) reveals twice higher species diversity

FIGURE 12. Lamproderma kowalskii A. Ronikier, Lado & Mar. Mey. A. Sporocarp (note dominating brown colours). B. Columella and capillitium in transmitted light. C. Spores in transmitted light (edge view). D. Spores in transmitted light (top view). E. Spore by SEM. F. Details of spore ornamentation by SEM. Bars: A = 1 mm, B = 500 μm, C–E = 10 μm, F = 3 μm. A, E–F: coll. DTK 6408 (holotypus), B–D: coll. DTK 6161.

FIGURE 11 in Revision of the Donald T. Kowalski's collections of Lamproderma (Myxomycetes, Amoebozoa) reveals twice higher species diversity

FIGURE 11. Lamproderma echinosporum Meyl.. A. Sporocarps (note blackish brown depressed patches on the peridium surface and relatively long stalks). B. Capillitium, columella and peridium in transmitted light (note brown patches visible on the peridium). C. Spores in transmitted light (edge view). D. Spores in transmitted light (top view). E. Spore by SEM. F. Details of spore ornamentation by SEM. Bars: A = 1 mm, B = 500 μm, C–E = 10 μm, G = 3 μm. A: coll. DTK 3496, B: coll. DTK 8386, C–F: coll. DTK 6275.

FIGURE 20 in Revision of the Donald T. Kowalski's collections of Lamproderma (Myxomycetes, Amoebozoa) reveals twice higher species diversity

FIGURE 20. Lamproderma scintillans (Berk. & Broome) Morgan A–B. Sporocarps. C. Open sporocarp. D. Details of columella and capillitium in transmitted light (note hyaline capillitium threads near columella). E. Spores in transmitted light (edge view). F. Spores in transmitted light (top view). G. Spore by SEM. H. Details of spore ornamentation by SEM. Bars: A–C = 500 μm, D = 100 μm, E–G = 10 μm, H = 3 μm. A: coll. DTK 5020, B–F: coll. DTK 4223, G–H: coll. DTK 4777.

Figure 9 in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 9. Netzelia lobostoma and Cucurbitella mespiliformis: scanning electron micrographs of oral and lateral view of the test. The images on the right represent details of the collar. On the left, a photograph of a typical habitat for these species, and original drawings of Netzelia lobostoma (Leidy, 1874) and of Cucurbitella mespiliformis (Penard, 1902).

Figure 8 in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 8. Arcella guadarramensis: scanning electron micrographs of the aboral and oral sides of the test. The images on the right represent a detail of the test and the structure of the aperture. On the left, a photograph of a typical habitat for this species, and original drawing of the closest resembling species, Galeripora artocrea (Leidy, 1879).

Figure 7 in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 7. Arcella conica: scanning electron micrographs of the aboral, oral and lateral sides of the test. The images on the right represent a detail of the test and the structure of the aperture. On the left, photographs of a typical habitat for the species, and original drawing of Arcella conica (Playfair, 1918).

Figure 5 in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 5. Galeripora naiadis, Galeripora bathystoma and Galeripora polypora: scanning electron micrographs of the aboral and oral sides of the test, for G. naiadis the images correspond with pictures of Arcella discoides in Todorov & Bankov (2019). The images on the right represent a detail of the test and the structure of the aperture. On the left, a photograph of a typical habitat for each species, original drawing of the closest resembling species Galeripora discoides (Ehrenberg, 1843), and original drawing of Galeripora bathystoma (Deflandre, 1928) and Galeripora polypora (Penard, 1890).

Figure 4 in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 4. Galeripora galeriformis, Galeripora bufonipellita, Galeripora sitiens and Galeripora balari: scanning electron micrographs of the aboral and oral sides of the test. The images on the right represent detail of the test and the structure of the aperture. On the left, a photograph of a typical habitat for each species, original drawing of the closest resembling species Galeripora arenaria (Greef, 1866), and original drawings of the synonymized species Arcella microstoma Penard, 1890 and Arcella aureola Maggi, 1888.

Figure 2. A in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 2. A, scatterplot of the scores of linear discriminants with x-axis representing discriminant function 1 (LD1) and y-axis representing discriminant function 2 (LD2). Colours represent the different mitochondrial clades and symbols refer to the different sections after Deflandre (1928): squares are for Section 1 'Vulgares', circles for Section 2 'Carinatae' and triangles for Section 3 'Aplanatae'. The drawings represent the different morphotypes. B, the table represents the results of a linear discriminant analysis which determines the relationship between predicted and observed specimens cells for each mitochondrial clade.

Figure 6 in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 6. Galeripora catinus: scanning electron micrographs of the aboral and oral sides of the test. The images on the right represent a detail of the test and the structure of the aperture. On the left, a photograph of a typical habitat for the species, a peat bog and original drawing of Galeripora catinus (Penard, 1890).

Figure 1 in Multiple convergences in the evolutionary history of the testate amoeba family Arcellidae (Amoebozoa: Arcellinida: Sphaerothecina): when the ecology rules the morphology

Figure 1. Bayesian phylogenetic tree based on 52 partial sequences COI mtDNA data, 618-nucleotide position alignment. The posterior probability values (Bayesian analysis) and bootstrap values (maximum-likelihood) are represented at each node, with a letter representing the different mitochondrial clades along the branches. The colours represent the mitochondrial clades that compose the different figures. Next to each species name is the original habitat (freshwater/Sphagnum/terrestrial mosses) and the section according to Deflandre (1928). The drawings show the tests of illustrative species in lateral and oral side views. Drawings by CSZ.

Fig. 7 A in Is scale's structure still a good character to delimitate species of Amoebozoa? case of the genus Korotnevella (Amoebozoa, Dactylopodida)

Fig. 7 A region of cell coverings of critical point dried cell showing scales of Korotnevella sp. 3 (A) and Korotnevella limbata (B). SEM. Abbreviations: DS, dish-shaped scale; Fi, filaments; LB, latticework basket; PF, perforated rim; R, rim. Scale bars = 0.1 μm

Fig. 2 in Is scale's structure still a good character to delimitate species of Amoebozoa? case of the genus Korotnevella (Amoebozoa, Dactylopodida)

Fig. 2 Light micrographs of Korotnevella sp. 1 (A–F), Korotnevella sp. 2 (G–K), K. hortobotanici sp. nov. (L–P), and Korotnevella sp. 3 (Q–V). Locomotive forms in a Petri dish, phase contrast (A–D, G, H, L–N, Q–S). Nucleus, DIC (E, I–K, O, P, T, U). Cyst, DIC (F,

Fig. 1 in Is scale's structure still a good character to delimitate species of Amoebozoa? case of the genus Korotnevella (Amoebozoa, Dactylopodida)

Fig. 1 Korotnevella leshevi sp. nov. Light (phase contrast (A–C) and DIC (D, E)) and electron micrographs (critical point dried cells, SEM (F), and whole mounts of air-dried cells, TEM (G)). A–C Locomotive forms in a Petri dish. D Cell compressed with coverslip showing nucleus. E Cyst compressed with a coverslip. F A region of cell coverings showing scales. G Whole mounts of air-dried scales. Arrows indicate a direction of cell movement. Abbreviations: ac, apical column; cv, contractile vacuole; ds, dish-shaped scale; bp, basal plate; l, lacuna; lc, lateral column; lb, latticework basket; ls, layer of scales; n, nucleus; nu, nucleolus; pf, perforated flange. Scale bars = 10 μm (A–E), 0.1 μm (F, G)

Fig. 5 A in Is scale's structure still a good character to delimitate species of Amoebozoa? case of the genus Korotnevella (Amoebozoa, Dactylopodida)

Fig. 5 A selection of alignment columns containing nucleotide substitutions which distinguish sequences of 5′ fragment of the Cox I gene of Korotnevella heteracantha

Fig. 6 A in Is scale's structure still a good character to delimitate species of Amoebozoa? case of the genus Korotnevella (Amoebozoa, Dactylopodida)

Fig. 6 A phylogenetic tree based on sequences of 5′ fragment of the Cox I gene (maximum likelihood method, GTR + Γ model, 666 positions). Support: bootstrap values; only values higher than 50 are indi- cated. Scale bar = 0.05 substitution/nucleotide position

Fig. 4 A in Is scale's structure still a good character to delimitate species of Amoebozoa? case of the genus Korotnevella (Amoebozoa, Dactylopodida)

Fig. 4 A selection of alignment columns containing nucleotide substitutions which distinguish the sequences of the 5′ fragment of the Cox I gene of Korotnevella stella isolates