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1,925 results for “Platyhelminthes”
FIGURE 3 in Three Pseudocerotidae species (Platyhelminthes, Polycladida, Cotylea) from the Argentinean coast
FIGURE 3. Phrikoceros mopsus (Marcus, 1952): A, sagittal section of the male copulatory organ; B, sagittal section of the female system. Abbreviations: cg, cement glands; ej, ejaculatory duct; g, gut; ma, male atrium; ovi, oviduct; pd, prostatic duct; s, stylet; sv, seminal vesicle; v, vagina. Scale bar: figure 3A, 200µm; figure 3B, 1000 µm.
FIGURE 2 in Three Pseudocerotidae species (Platyhelminthes, Polycladida, Cotylea) from the Argentinean coast
FIGURE 2. Phrikoceros mopsus (Marcus, 1952): Sagittal diagram of the reproductive system. Abbreviations: cg, cement glands; cp, cement pouch; ej, ejaculatory duct; exg, extra vesicular glands; fg, female gonopore; g, gut; mg, male gonopore; ovi, oviduct; pv; prostatic vesicle; s, stylet; sb, spermiducal bulbs; sv, seminal vesicle; v, vagina. Scale bar: 1000 µm.
FIGURE 6 in Three Pseudocerotidae species (Platyhelminthes, Polycladida, Cotylea) from the Argentinean coast
FIGURE 6. Thysanozoon brocchii (Risso, 1818). A Sagittal section of male copulatory organ; B, sagittal section of vagina; C, testicular follicles; D, a dorsal body papilla. Abbreviations: cg, cement glands; ej, ejaculatory duct; g, gut; ma, male atrium; pd, prostatic duct; ps, penis sheath; pv, prostatic vesicle; rh, rhabdites; s, stylet; v, vagina.
FIGURE 5 in Three Pseudocerotidae species (Platyhelminthes, Polycladida, Cotylea) from the Argentinean coast
FIGURE 5. Thysanozoon brocchii (Risso, 1818). Sagittal diagram of the reproductive system. Abbreviations: cg, cement glands; ej, ejaculatory duct; fg, female gonopore; g, gut; ma, male atrium; mg, male gonopore; ovi, oviduct; pv, prostatic vesicle; s, stylet; sv, seminal vesicle; u, uterus; v, vagina. Scale bar: 1000 µm.
FIGURE 9 in Three Pseudocerotidae species (Platyhelminthes, Polycladida, Cotylea) from the Argentinean coast
FIGURE 9. Thysanozoon mirtae sp. nov. A, sagittal section of the vagina; B, sagittal section of the male copulatory organ; C, sagittal section of the fore part of the body; D, section of intestinal caeca and parenchymatic musculature; E, section of the accessory seminal vesicles. Abbreviations: cg, cement glands; dp, dorsal papilla; g, gut; pm, parenchymatic muscle fibres; rh, rhabdites; s, stylet; spv, spermiducal vesicles; sv; seminal vesicle; v, vagina.
FIGURE 1 in Three Pseudocerotidae species (Platyhelminthes, Polycladida, Cotylea) from the Argentinean coast
FIGURE 1. Phrikoceros mopsus (Marcus, 1952): A, dorsal view of a living specimen; B, dorsal view of the fore end of a living specimen; C, dorsal view of another specimen; D, dorsal view diagram; E, ventral view of the fore end of a living specimen; F, egg-layer. Abbreviations: frs, female reproductive system; mco, male copulatory organ; u, uteri; ph, pharynx; su, sucker; t, tentacle; te; testes. Scale bars: figures 1A, 1C, 1D: 1cm; 1E: 1.5 cm; 1F: 4 cm.
FIGURE 4 in Three Pseudocerotidae species (Platyhelminthes, Polycladida, Cotylea) from the Argentinean coast
FIGURE 4. Thysanozoon brocchii (Risso, 1818). A, dorsal view of a living specimen; B, dorsal diagram; C, ventral diagram of the whole body. Abbreviations: fg, female gonopore; mg, male gonopore; ph, pharynx; su, sucker; te, testes; u, uterus. Scale bars: figures 3A and 3B, 13 mm.
FIGURE 8 in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 8. Castrella truncata (Abildgaard, 1789) Hofsten, 1907 (A) Stylet of a Canadian specimen. Castrella pinguis (Silliman, 1884) Fuhrmann, 1900 (B–C) Stylets from Alabama specimens.
FIGURE 6 in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 6. Gieysztoria rubra (Fuhrmann, 1894) Ruebush & Hayes, 1939 (A) Squeezed live animal, dorsal view. (B) Detail of the genital system in a live animal. (C) Stylet. Gieysztoria dodgei (Graff, 1911) Ruebush & Hayes, 1939 (D–F) Stylets.
FIGURE 7 in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 7. Microdalyellia fairchildi (Graff, 1911) Gieysztor, 1938 (A) Stylet of a specimen from Canada. (B) Stylet of a specimen from Finland. Microdalyellia rossi (Graff, 1911) Gieysztor, 1938 (C–D) Stylets from morphotype 1 animals. (E) Stylet from morphotype 2 animal. (F) Stylet from morphotype 3 animal. (G) Stylet from morphotype 4 animal. (H) Stylet from morphotype 5 animal. (I) Stylet from morphotype 6 animal. (J–K) Stylets from morphotype 7 animals.
FIGURE 4. Gieysztoria choctaw n in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 4. Gieysztoria choctaw n. sp. (A) Habitus from a substrate-attached, live animal, dorsal view. (B) Habitus from a swimming, live animal, dorsal view. (C) Habitus from a substrate-attached, live animal, lateral view. (D) Internal organisation from a live animal based on a squash preparation. (E) Stylet (holotype). (F) Reconstruction of the genital system from the right hand side.
FIGURE 3. Gieysztoria choctaw n in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 3. Gieysztoria choctaw n. sp. (A) Squash preparation of a live animal. (B) Detail of the genital system in a live animal. (C) Detail of the male copulatory organ in a live animal. (D–G) Stylets of three different specimens (paratypes).
FIGURE 2. Pseudodalyellia alabamensis n. gen. n in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 2. Pseudodalyellia alabamensis n. gen. n. sp. (A) Internal organisation from a live animal. (B) Reconstruction of the anterior body end and the pharynx from the left hand side. (C) Reconstruction of the genital system from the left hand side.
FIGURE 1. Pseudodalyellia alabamensis n. gen. n in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 1. Pseudodalyellia alabamensis n. gen. n. sp. (A–B) Squeezed live animals showing the reddish-brown to purple pigmentation, dorsal view. (C–D) Stylets (paratype). (E–F) Stylet (holotype).
FIGURE 5 in Freshwater Dalyelliidae from the Nearctic (Platyhelminthes, Rhabdocoela): new taxa and records from Ontario, Canada and Michigan and Alabama, USA
FIGURE 5. Gieysztoria pavimentata (Beklemischew, 1926) Ruebush & Hayes, 1939 (A) Squeezed live animal, dorsal view. (B) Squeezed live animal, lateral view. (C) Detail of the bursa and spermatophores in a live animal. (D–F) Stylets of Alabaman specimens. (G) Stylet of the specimen from Finland.
FIGURES 6–7 in Geoplana multicolor Graff (Platyhelminthes: Tricladida): new records and taxonomic re-interpretation of morphological characters
FIGURES 6–7. Diagrammatic sagittal composite reconstructions of the copulatory apparatus of G. multicolor: (6) from São Francisco de Paula (MZU PL.00083); (7) from Santa Maria (MZU PL.00100). (cov) common glandular oviduct, (e) ejaculate, (ef) efferent duct, (ej) ejaculatory duct, (fa) female atrium, (go) gonopore, (ma) male atrium, (ov) oviducts, (pp) penis papilla, (pv) prostatic vesicle, (sc) secretory cells, (sg) shell glands, (va) vagina. Scale bar: 1mm.
FIGURE 4 in Geoplana multicolor Graff (Platyhelminthes: Tricladida): new records and taxonomic re-interpretation of morphological characters
FIGURE 4. Detail of the pre-pharyngeal region in transverse section of specimen MZU PL.00091 of G. multicolor Graff, 1899. (cm) cutaneous musculature, (de) dorsal epidermis, (gm) glandular margin, (i) intestine, (mm) mesenchymatical muscles, (t) testes. Scale bar: 1mm.
FIGURES 2–3 in Geoplana multicolor Graff (Platyhelminthes: Tricladida): new records and taxonomic re-interpretation of morphological characters
FIGURES 2–3. Detail of colour pattern of preserved specimens of G. multicolor Graff, 1899 from Southern Brazil: (2) specimen MZU PL.00092, from Santa Maria; (3) specimen MZU PL.00095, from Caxias do Sul. (e) eyes, (m) median stripe, (pm) paramedian stripes. Scale bar: 1mm.
FIGURE 1 in Geoplana multicolor Graff (Platyhelminthes: Tricladida): new records and taxonomic re-interpretation of morphological characters
FIGURE 1. Photograph of a live specimen of G. multicolor Graff, 1899, in dorsal view, from São Francisco de Paula.
FIGURES 10–13 in Geoplana multicolor Graff (Platyhelminthes: Tricladida): new records and taxonomic re-interpretation of morphological characters
FIGURES 10–13. Copulatory apparatus of G. multicolor Graff, 1899: (10) from São Francisco de Paula (MZU PL.00083) in sagittal section; (11) from Caxias do Sul (MZU PL.00095) in sagittal section; (12) prostatic vesicle and (13) male and female atria of specimen MZU PL.00091 from Santa Maria in horizontal view. (ej) ejaculatory duct, (fa) female atrium, (go) gonopore, (ma) male atrium, (pp) penis papilla, (pv) prostatic vesicle, (sc) secretory cells, (va) vagina. Arrows indicate openings of the efferent ducts into the prostatic vesicle. Scale bar: 1mm (10, 11, 13); 500µm (12).
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