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11 results for “Neoleanira”
FIGURE 9. Neoleanira solitaria n in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 9. Neoleanira solitaria n. sp. Holotype (LACM-AHF-Poly 14415). A. SEM image from segment 34, anterior view, arrowhead indicates ventral ctenidium. B. Upper fusiform spinous neurochaetae. C. Close-up to the surface of same. D. Notochaetae. E. Upper group neurochaeta. Scale bars: A: 200 µm, B, E: 50 µm, C: 20 µm, D: 10 µm.
FIGURE 6. Neoleanira solitaria n in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 6. Neoleanira solitaria n. sp. Holotype (LACM-AHF-Poly 14415). A. Incomplete specimen. B. Median right elytron. C. SEM image from same, marginal fimbriae. D. Posterior left elytron. E. Drawing of anterior end, dorsal view. F. Drawing of anterior end, ventral view. Abbreviations: au= auricle, ct= ctenidia, dc= dorsal cirrus, dtc= dorsal tentacular cirrus, ipas= inner palpal sheath, itl= inner tentacular lobe, lan= lateral antenna, man= median antenna, opas= outer palpal sheath, pa= palp, vtc= ventral tentacular cirrus. Scale bars: A: 5 mm, B, D: 200 µm, C: 50 µm, E, F: 1 mm.
FIGURE 8. Neoleanira solitaria n in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 8. Neoleanira solitaria n. sp. Holotype (LACM-AHF-Poly 14415). A. Drawing of parapodium from segment 21, anterior view. B. Drawing of same, posterior view. C. Diagrammatic of same, lateral view, color lines indicate the insertion of neurochaetal groups, color scheme following that shown in F. D. Interramal section of segment 21, anterior view, arrowhead indicates the spine inserted in neuropodium. E. Parapodium from segment 21, anterior view, inset: close-up of notochaetae. F. Neurochaetae from segment 21. G. Simple fusiform spinous neurochaetae from segment 33. Abbreviations: S1= lower middle group, UA= upper group, UB= upper middle group, UC= middle group, UD= lowest group. Scale bars: A–C: no scale, D, F, G= 50 µm, E: 200 µm.
FIGURE 5. Sthenolepis ruffi n in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 5. Sthenolepis ruffi n. sp. SEM images of paratypes (LACM-AHF-Poly 14403 and 14404). A. Anterior end, dorsal view. B. Anterior end, frontal view. C. Anterior end, ventral view. D. Posterior end, pygidium. E. Parapodia from median segments. F. Notochaetae from same. G. Ventral ctenidium. H. Neurochaetae, upper group. Abbreviations: an= anus, au= auricle, br= branchia, ct= ctenidia, dtu= dorsal tubercle, dtc= dorsal tentacular cirrus, ipas= inner palpal sheath, itl= inner tentacular lobe, lan= lateral antenna, man= median antenna, mo= mouth, opas= outer palpal sheath, pa= palp, st= stylode, vc= ventral cirrus, vtc= ventral tentacular cirrus. Scale bars: A–E: 100 µm, F: 10 µm, G: 50 µm, H: 20 µm.
FIGURE 3. Sthenolepis ruffi n in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 3. Sthenolepis ruffi n. sp. Holotype (LACM-AHF-Poly 14396). A. Complete specimen, inset: 1st right elytron, medium right elytron, posterior right elytron, and pygidium, ventral view. B. Drawing of anterior end, dorsal view. C. Drawing of anterior end, ventral view. D. Neurochaetae from segment 3. E. Parapodium from segment 3, anterior view, inset: close-up of notochaetae from lower and upper position. Abbreviations: au= auricle, ct= ctenidia, dtu= dorsal tubercle, dtc= dorsal tentacular cirrus, ftu= facial tubercle, ipas= inner palpal sheath, itl= inner tentacular lobe, lan= lateral antenna, man= median antenna, opas= outer palpal sheath, pa= palp, S1= lower middle group, UA= upper group, UB= upper middle group, UC= middle group, UD= lowest group. Scale bars: A: 5 mm, B, C: 1 mm, D: 50 µm, E: 200 µm.
FIGURE 2. Sthenolepis spargens Fauchald 1972 in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 2. Sthenolepis spargens Fauchald 1972. Holotype (LACM-AHF-Poly 1053). A. Drawing of parapodium from segment 20, anterior view. B. Drawing of same, posterior view. C. Diagrammatic of same, lateral view, color lines indicate the insertion of neurochaetal groups, color scheme following that shown in D. D. Neurochaetae from segment 20, inset: close-up of the distal margin of upper group handle. E. Parapodium from segment 20, anterior view, inset: close-up of a notochaeta. Abbreviations: as= anterior side; ps= posterior side. S1= lower middle group, UA= upper group, UB= upper middle group, UC= middle group, UD= lowest group. Scale bars: A–C: no scale, D: 50 µm, E: 200 µm.
FIGURE 1. Sthenolepis spargens Fauchald, 1972 in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 1. Sthenolepis spargens Fauchald, 1972. Holotype (LACM-AHF-Poly 1053). A. Incomplete specimen, inset: closeup of stylodes emerging from the posterior surface on posterior segments. B. Drawing of anterior end, dorsal view. C. Drawing of anterior end, ventral view. D. Neurochaetae from segment 3. E. Parapodium from segment 3, anterior view, inset: close-up of a notochaeta. Abbreviations: au= auricle, ct= ctenidia, dtu= dorsal tubercle, dtc= dorsal tentacular cirrus, ftu= facial tubercle, ipas= inner palpal sheath, itl= inner tentacular lobe, lan= lateral antenna, man= median antenna, opas= outer palpal sheath, pa= palp, S1= lower middle group, UA= upper group, UB= upper middle group, UC=middle group, UD= lowest group, vtc= ventral tentacular cirrus. Scales bars: A, B, C: 1 mm, D: 50 µm, E: 200 µm.
FIGURE 4. Sthenolepis ruffi n in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 4. Sthenolepis ruffi n. sp. Holotype (LACM-AHF-Poly 14396). A. Drawing of parapodium from segment 20, anterior view. B. Drawing of same, posterior view. C. Diagrammatic of same, lateral view, color lines indicate the insertion of neurochaetal groups, color scheme following that shown in E. D. Parapodium from segment 20, anterior view, inset: close-up of notochaetae. E. Neurochaetae from segment 20. S1= lower middle group, S2= lower group, UA= upper group, UB= upper middle group, UC= middle group, UD= lowest group. Scale bars: A–C: no scale, D: 200 µm, E: 50 µm.
FIGURE 7. Neoleanira solitaria n in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
FIGURE 7. Neoleanira solitaria n. sp. Holotype (LACM-AHF-Poly 14415). A. Parapodium from segment 3, anterior view, inset: close-up of notochaetae, arrowhead indicates dorsal cirrus. B. Neurochaetae from segment 3. Abbreviations: S1= lower middle group, UA= upper group, UB= upper middle group, UC= middle group, UD= lowest group. Scale bars: A: 200 µm, B: 50 µm.
TABLE 2 in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
<p><b>TABLE 2.</b> Comparative table of the valid species of <i>Neoleanira</i> Pettibone, 1970b (Read & Fauchald 2024), including the geographical and bathymetrical distribution. The number of times in sizes relationships between wide and length is given by ‘×’.</p><table><tbody><tr><th></th><th><i>N. areolata</i> (McIntosh, 1885)</th><th><i>N. magellanica</i> (McIntosh, 1885)</th><th><i>N. racemosa</i> (Fauchald, 1972)</th><th><i>N. tetragona</i> (Örsted, 1845)</th><th><i>N. solitaria</i> <b>n. sp.</b></th></tr></tbody><tbody><tr><th>Type locality</th><td>South of Yedo, Japan San Nicolas Basin, California (synonym <i>Leanira calcis</i>)</td><td>Off little Wellington Island, Chile</td><td>Guaymas Basin, Gulf of California, Mexico</td><td>Christianiafjord, Norway</td><td>W of Farallon Islands, California, USA</td></tr><tr><th>Depth (m)</th><td>280–1,370</td><td>485–675</td><td>1,774–2,900</td><td>40–2,200</td><td>2,560</td></tr><tr><th>Median antenna style size compared to its ceratophore</th><td>5–7× as long</td><td>8× as long</td><td>–</td><td>6× as long</td><td>8× as long</td></tr><tr><th>Lateral antennae style size compared to prostomium</th><td>2× as long</td><td>3× as long</td><td>Shorter</td><td>1.5× as long</td><td>2× as long</td></tr><tr><th>Auricle size compared to median ceratophore</th><td>¼× as long</td><td>½× as long</td><td>½× as long</td><td>1/3× as long</td><td>1/3× as long</td></tr><tr><th>Palps size (reach segment)</th><td>Segment 19</td><td>Segment 30</td><td>–</td><td>Segment 20</td><td>Segment 20</td></tr><tr><th>Tentacular cirri size compared to parapodia</th><td>4× as long</td><td>5× as long</td><td>Similar length</td><td>Slightly longer</td><td>3× as long</td></tr><tr><th>Size of dorsal cirrus from segment 3 compared to the parapodia</th><td>Slightly longer</td><td>As long as parapodium</td><td>Slightly longer</td><td>Similar</td><td>Slightly longer</td></tr><tr><th>Simple chaetae in posterior neuropodia</th><td>Absent</td><td>Absent</td><td>Absent</td><td>Absent</td><td>Present</td></tr><tr><th>Neurochaetae canaliculate</th><td>Present</td><td>Present</td><td>Absent</td><td>Present</td><td>Present</td></tr><tr><th>Neurochaetal handles (distal section)</th><td>Subdistal spines</td><td>Smooth</td><td>Distal spines</td><td>Smooth</td><td>Subdistal and distal spines</td></tr><tr><th>First branchiae</th><td>Segment 6</td><td>Segment 7</td><td>Segment 2</td><td>Segment 6</td><td>Segment 2</td></tr><tr><th>First ctenidial pads</th><td>Segment 6</td><td>Segment 7</td><td>–</td><td>Segment 6</td><td>Segment 1</td></tr><tr><th>Branchiae with a spurlike process</th><td>Present</td><td>Absent</td><td>Absent</td><td>Absent</td><td>Absent</td></tr><tr><th>Ventral ctenidia</th><td>Boot-shaped</td><td>Clavate</td><td>–</td><td>Clavate</td><td>Boot-shaped</td></tr><tr><th>Elytral surface/Margin</th><td>Smooth/Fimbriae</td><td>Granular/Smooth</td><td>–</td><td>Smooth/Fimbriae</td><td>Smooth/Fimbriae</td></tr><tr><th>Reference</th><td>McIntosh 1885; Hartman 1960; Pettibone 1970b; Imajima 2003</td><td>McIntosh 1885; Pettibone 1970b</td><td>Fauchald 1972; Pettibone 1989</td><td>Örsted 1845; Pettibone 1970b</td><td>This study</td></tr></tbody></table>
TABLE 1 in Description of new species of deep water Sthenolepis Willey, 1905 and Neoleanira Pettibone, 1970 (Annelida, Sigalionidae) from off Northern California, with the redescription of Sthenolepis spargens Fauchald, 1972
<p><b>TABLE 1.</b> Comparative table of the valid species of <i>Sthenolepis</i> Willey, 1905 (Read & Fauchald 2024), including the geographical and bathymetrical distribution. The number of times in sizes relationships between wide and length is given by ‘×’.</p><table><tbody><tr><th></th><th><i>S. fimbriarum</i> (Hartman, 1939)</th><th><i>S. grubei</i> (Treadwell, 1901)</th><th><i>S. Japonica</i> (McIntosh, 1885)</th><th><i>S. Javanica</i> (Horst, 1917)</th><th><i>S. kuekenthali</i> Augener, 1922</th><th><i>S. melanocephala</i> (Horst, 1917)</th><th><i>S. oculata</i> (Hartman, 1942)</th><th><i>S. spargens</i> Fauchald, 1972</th><th><i>Leanira izuensis</i> Takahashi, 1938</th><th><i>Leanira vulturis</i> Horst, 1917</th><th><i>S. ruffi</i> <b>n. sp.</b></th></tr></tbody><tbody><tr><th>Type locality</th><td>Escondido Bay, off Carmen Island, Baja California, Mexico</td><td>Puerto Rico</td><td>Kobe, Japan</td><td>N coast of Java</td><td>Kingston, Jamaica</td><td>Molo Strait, Indonesia</td><td>Off Cayo Fragoso, Cuba</td><td>Mazatlán, Mexico</td><td>Izu Peninsula, Japan</td><td>Makassar, Indonesia</td><td>W of Farallon Islands, California, USA</td></tr><tr><th>Depth (m)</th><td>Shore–18.2</td><td>1</td><td>91.4</td><td>330</td><td>–</td><td>69–91</td><td>438</td><td>1,750–3,400</td><td>30–130</td><td>30.6–56</td><td>2,350–3,253</td></tr><tr><th>Median antenna style size compared to prostomium</th><td>Slightly longer</td><td>Shorter</td><td>2× as long</td><td>4× as long</td><td>–</td><td>Slightly longer</td><td>–</td><td>–</td><td>Slightly longer, biarticulate</td><td>Half as long, biarticulate</td><td>4× as long</td></tr><tr><th>Auricle size compared to median ceratophore</th><td>Similar length</td><td>Slightly larger</td><td>½ as long</td><td>Similar length</td><td>–</td><td>Similar length</td><td>½ as long</td><td>½ as long</td><td>Similar length</td><td>½ as long</td><td>½ as long</td></tr><tr><th>Eyes</th><td>Present</td><td>Present</td><td>Present</td><td>Absent</td><td>Present</td><td>Present</td><td>Present</td><td>Absent</td><td>Absent</td><td>Present</td><td>Absent</td></tr><tr><th>Palps size (reach segment)</th><td>–</td><td>Segment 9</td><td>Approx. Segment 16</td><td>Segment 10</td><td>–</td><td>Segment 12</td><td>Segment 13</td><td>Segment 20</td><td>Segment 14</td><td>Approx. Segment 18</td><td>Segment 12</td></tr><tr><th>Tentacular cirri size compared to parapodia</th><td>Similar</td><td>–</td><td>Slightly longer</td><td>2× as long</td><td>–</td><td>3× as long</td><td>–</td><td>12× as long</td><td>Slightly longer</td><td>6× as long</td><td>5× as long</td></tr><tr><th>Neurochaetae canaliculate</th><td>Absent</td><td>Absent</td><td>Present</td><td>Present</td><td>Present</td><td>Present</td><td>Present</td><td>Present</td><td>Present</td><td>Present</td><td>Present, may be absent in lowest neurochaetae</td></tr><tr><th>Neurochaetal handles (distal section)</th><td>Slightly spinose</td><td>Smooth</td><td>Smooth</td><td>Subdistal tooth</td><td>–</td><td>Smooth</td><td>Smooth</td><td>Enlarged subdistal tooth</td><td>Smooth</td><td>Smooth</td><td>Small subdistal tooth</td></tr><tr><th>First branchiae</th><td>Segment 7</td><td>–</td><td>–</td><td>Segment 5</td><td>–</td><td>Segment 5</td><td>–</td><td>Segment 2</td><td>Segment 13</td><td>Segment 13</td><td>Segment 2</td></tr><tr><th>Elytral surface/</th><td>Smooth/</td><td>Smooth/</td><td>Smooth/</td><td>Granular/</td><td>Smooth/</td><td>Granular/Smooth</td><td>Smooth/</td><td>–</td><td>Smooth/</td><td>Smooth/</td><td>Smooth/</td></tr><tr><th>Margin</th><td>Fimbriae</td><td>Fimbriae</td><td>Fimbriae</td><td>Fimbriae</td><td>Anterior ones with fimbriae, posterior ones smooth</td><td></td><td>Smooth</td><td></td><td>Smooth</td><td>Smooth</td><td>Smooth</td></tr><tr><th>Reference</th><td>Hartman 1939</td><td>Treadwell 1901</td><td>McIntosh, 1885; Uschakov & Wu 1959; Imajima 1997</td><td>Horst 1917</td><td>Augener 1922</td><td>Horst 1917</td><td>Hartman 1942</td><td>Fauchald 1972; this study</td><td>Takahashi 1938</td><td>Horst 1917</td><td>This study</td></tr></tbody></table><p><i>Sthenolepis gracilior</i> Augener, 1927 was deliberately kept out of this table due to the lack of morphological details in the original description, which may agree or disagree with <i>Sthenolepis</i> but to other morphologically close genera such as <i>Horstileanira</i> or <i>Labiosthenolepis</i>. Currently, <i>Leanira izuensis</i> and <i>L. vulturis</i> are junior synonyms of <i>Ehlersileanira incisa</i> (Grube, 1877); however, here they are considered in the table due to the past combination under the genus-group name <i>Sthenolepis</i> and the current unclear specific status (Hartman 1965; Cruz-Gomez 2022b).</p>
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