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48 results for “Leptothecata”
Figure 2 A-G in A new species of Halopteris (Hydrozoa: Leptothecata) and redescription of Plumularia rotunda from Victoria, Australia
Figure 2 A-G. Plumularia rotunda (NMV F207643) from Barwon Heads. A, stem. B, stem internode and hydrothecae, C, hydrotheca, ventral view. D, hydrotheca, lateral view showing deep submarginal ridge. E,Plumularia rotunda, hydrotheca of (NMV F57984) lectotype of Plumularia delicatula var. rotunda Mulder and Trebilcock, 1911 for comparison with D. F cauline internode, and axillar nematotheca of (NMV F207643). G, cauline nematotheca of (NMV F207643). Scale bar: A, 1.0 mm; B, 0.5 mm; C-G, 0.2 mm.
Figure 3 A-D in A new species of Halopteris (Hydrozoa: Leptothecata) and redescription of Plumularia rotunda from Victoria, Australia
Figure 3 A-D. Plumularia wilsoni. (A-C, from Robe, South Australia, author's collection). A, stem internodes with hydrotheca. B, hydrocladium and hydrotheca. C, male gonotheca.. D, hydrotheca of lectotype (NMV F59050). Scale bar: A, B, D, 0.2 mm; C, 1.0 mm.
Figure 1A-F in A new species of Halopteris (Hydrozoa: Leptothecata) and redescription of Plumularia rotunda from Victoria, Australia
Figure 1A-F. Halopteris urceolata sp. nov. A, part of stem of holotype colony (NMV F207310) showing secondary branching. B, branched hydrocladium. C, median inferior nematotheca. D, twin lateral nematothecae. E, cauline nematotheca. F, microbasic eurytele. Scale bar: A, 1.0 mm; B, 0.3 mm; C-E, 0.1 mm; F, 10 µm.
Fig. 1 in A swimming medusoid gonophore in the life cycle of Ventromma halecioides (Alder, 1859) (Hydrozoa: Leptothecata: Kirchenpaueriidae)
Fig. 1. (A) Portion of colony showing the cauline apophysis and its associated nematotheca, and proximal part of a cladium with first hydrothecate internode and its thecae. (B) Expanded hydranth, showing colors in life. (C) Gonotheca with female gonophore. (D) Whole young male gonophore extracted from its gonotheca. (E-F) Newly-liberated female medusoid (E) and close-up showing polygonal oocytes (F). (G) Squashed female medusoid showing Y-shaped spadix. (H-I) Stained (H) and cross-section (I) through female medusoid showing the spadix encircled by single layer of oocytes. (J-K) Female medusoid escaping from its protective membrane (J) and newly-liberated individual (K). (L) Male medusoid enveloped in membrane. Scale bars: 50 μm (B), 100 μm (A, F), 200 μm (C, G-I, L), 400 μm (D, E, J, K).
Figure 2. a–f. a, b, Zygophylax concinna. a, branch internodes with hydrothecae. b, hydrotheca. c, d in Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia
Figure 2. a–f. a, b, Zygophylax concinna. a, branch internodes with hydrothecae. b, hydrotheca. c, d, Amphisbetia ramifera sp. nov. c, stem with subopposite hydrothecae and axillar hydrotheca. d, branch with opposite hydrothecae. e, f. Lytocarpia parvispiralis sp. nov. e, holotype colony. f, hydrothecae, lateral view.
Figure 1. a−g. a, b, Acryptolaria angulata. a, distal monosiphonic stem. b, hydrotheca. c–e, Cryptolarella abyssicola. c, monosiphonic branch with subalternate hydrothecae. d in Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia
Figure 1. a−g. a, b, Acryptolaria angulata. a, distal monosiphonic stem. b, hydrotheca. c–e, Cryptolarella abyssicola. c, monosiphonic branch with subalternate hydrothecae. d, gonotheca with wrinkled abcauline wall and upturned margin. e, gonotheca with oblique margin. f, Hebella macroplana sp. nov., stolonal hydrotheca. g, Hebella sp., stolonal colony and pedicellate hydrotheca.
FIGURE 4 in Polysertularella polyseriata, a new genus and species of hydroid (Hydrozoa; Leptothecata; Sertulariidae) from the Sea of Okhotsk
FIGURE 4. Polysertularella polyseriata sp. nov. Basic part of the stem with hydrothecae and a pair of gonothecae.
FIGURE 8 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 8. Antennella singulata sp. nov. A, Paratype colony from St Leonards. B, hydrocladium from paratype. C, female gonotheca, one nematotheca hidden. D, lateral nematotheca. E, median inferior nematotheca from hydrothecate internode. F, nematotheca from ahydrothecate internode. G, micobasic mastigophore, H,?isorhiza Scale bar: A, 1 mm, B, C, 0.5 mm, D–F 0.2 mm, G, H, 10 µm.
FIGURE 12. Obelia bidentata. A in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 12. Obelia bidentata. A, part of stem showing alternate pedicels. B, hydrotheca. Scale bar: A, B 0.5 mm.
FIGURE 4 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 4. Hebella albida sp. nov. A,B, hydrothecae. C, hydrotheca with dome-shaped operculum. D, gonotheca. E, 24 hour old medusa released in laboratory. F, microbasic mastigophore from umbrella of medusa. G, microbasic mastigophore from hydranth. Scale bar: A–D, 0.5 mm, E, 1 mm, F,G, 20 µm.
FIGURE 1 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 1. Campanulina cliftonia sp. nov. A, hydrotheca with extended hydranth, drawn from live material. B, hydrothecae showing tufted operculum. C, intertentacular web of hydranth. D, large anisorhiza. E, small anisorhiza. Scale bar: A, 1 mm, B, 0.3 mm, C, 0.1 mm, D, E, 10 µm.
FIGURE 7. Macrorhynchia whiteleggei. A, hydrocladial internodes. B, hydrotheca. C in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 7. Macrorhynchia whiteleggei. A, hydrocladial internodes. B, hydrotheca. C, mature gonothecae, D, nematothecae on phylactocarp. Scale bar: A, B, D, 0.5 mm, C, 1 mm.
FIGURE 3. Hydranthea margarica. A in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 3. Hydranthea margarica. A, hydrotheca with extended hydranth, drawn from live material. B, replicated hydrotheca. C, immature gonophore. D. macrobasic mastigophore in tentacle web, hydranth and hydrorhiza. E, microbasic mastigophore in tentacles. Scale bar: A–C, 0.2 mm, D, E, 20 µm.
FIGURE 14. Gonothryraea loveni. A in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 14. Gonothryraea loveni. A, part of branch showing alternate pedicels. B, campanulate hydrotheca with thin diaphragm. C, conical hydrotheca with desmocytes above diaphragm. D, indented castellated hydrothecal margin. Scale bar: A, 0.1 mm, B, C, 0.5 mm, D, 0.2 mm.
FIGURE 2 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 2. Campanulina elata sp. nov. A, hydrotheca and extended hydranth, drawn from live material. B, three hydrothecae on hydrorhiza. C, D, hydrothecae with opercular remnants. E, microbasic mastigophore from tentacles. Scale bar: A, B, 0.3 mm, C, D, 0.2 mm, E, 10 µm.
FIGURE 13 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 13. Obelia spongicola sp. nov. A, fertile colony on sponge. B, fertile stem internodes. C, hydrotheca with castellate margin and diaphragm. D, pedicellate hydrotheca and gonotheca on hydrorhiza. E, hydrorhiza with embedded sponge spicules. F, microbasic mastigophore. Scale bar: A, B, 1 mm, C–E, 0.5 mm, F, 10 µm.
FIGURE 6. Macrorhynchia whiteleggei. Colony approximately 15 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 6. Macrorhynchia whiteleggei. Colony approximately 15 cm high, in situ photograph, Popes Eye reef, southern Port Phillip, depth 12 m, September 2008.
FIGURE 11 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 11. Sertularella mytila sp. nov. A, Erect fertile stem. B, stem internodes with hydrothecae. C, D, stolonal hydrothecae. E, female gonotheca. Scale bar: A, 1 mm, B–E, 0.5mm.
FIGURE 10 in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 10. Ventromma bellarensis sp. nov. A, Branched colony with gonothecae. B, monosiphonic section of branched stem. C hydrocladial internode with hydrotheca. D, monosiphonic branch with axillar nematotheca, hydrostatic pore and proximal branch internode. E, mature gonothecae on polysiphonic stem. F, female gonotheca with ova. G, large microbasic mastigophore. H, small microbasic mastigophore, undischarged. Scale bar: A, 25 mm, B, D, F, 0.5 mm, C, 0.2 mm, E, 1 mm, G, H, 10 µm.
FIGURE 5. Macrorhynchia mulderi. A, hydrocladial internodes. B, C in New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia
FIGURE 5. Macrorhynchia mulderi. A, hydrocladial internodes. B, C, hydrothecae, lateral views. D, hydrotheca, anterior frontal view, median nematotheca not drawn. Scale bar: A, 0.3 mm, B–D, 0.2 mm.
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