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| التنسيق: | Recurso digital |
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Zenodo
2025
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://doi.org/10.5281/zenodo.15823324 |
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جدول المحتويات:
- <p><b><i>Lagenopolycystis azorensis</i> Schockaert, Monnens, Jouk and Artois sp. nov.</b></p><p>urn:lsid:zoobank.org:act: 7943A224-0AB3-4422-B0B2-C9127B983A8F</p><p>(Fig. 4)</p><p><b>Diagnosis</b>. Species of <i>Lagenopolycystis</i> with a prostate stylet of 71–105 µm (x̄ = 89 µm, n = 15), curved at about 90° with a blunt terminal end; the proximal part of the stylet has two prominent, ear-shaped rims at both ends of the gutter. The accessory stylet attaches to the main stylet just below these thickened rims, at about 1/3 of the proximal end of the stylet. It measures 44–64 µm (x̄ = 57 µm, n = 15), is slender and sharp-ended, and is generally straight, though a slightly bent tip was observed in most specimens. The structure of the ‘seminal receptacle tube’ is unknown.</p><p><b>Distribution</b>. PORTUGAL, AZORES, SÃO MIGUEL • Maia, N37°50’03” W25°23’8”, sand from between rocks, 0.5–2 m deep (20 July 2019) (<b>TYPE LOCALITY</b>).</p><p>ITALY, SARDINIA • Cala Sant’ Andrea, N41°00’48” E8°14’56”, 5 to 6 m deep (27 September 2014).</p><p>FRANCE • Banyuls-sur-Mer, Île Grosse, ‘ La Faille’, N42°28’57” E3°08’16”, clean fine sand, 12 m deep (6 August 2007); Banyuls-sur-Mer, ‘ l’Herbier’, 20–30 m left of end of pipes, N42°28’56” E3°08’09”, fine to medium sand with some silt, 10 m deep (2 November 2007); Cerbère, Peyrefite Bay, south side of bay, N42°27’35” E3°09’34”, sand area between sea grass beds and rocks, clean fine sand, 7 m deep (13 July 2007); same locality, south side of bay, N42°27’35” E3°09’28”, sand mixed with some gravel, 3 m deep (12 July 2020); Cerbère, ‘Les Chambres’, N42°26’28” E3°10’16”, sand area between rocks, medium to coarse sand, 2–3 m deep (16 July 2013); same locality, N42°26’30” E3°10’21”, sand area between rocks, coarse sand mixed with gravel, 5–6 m deep (16 July 2015); Cerbère, Terrimbo, Les Aloès, N42°27’12” E3°09’42”, at foot of rock forming a little island on the left side of the jetty, medium sand mixed with some gravel and debris of sea grass leaves, 6 m deep (26 August 2016); same locality, small rocky islands just south of municipal camping, N42°27’13” E3°09’52”, fine sand with some silt, 15 m deep (18 May 2022).</p><p>SPAIN • Portbou, l’Ocell, N42°25’59” E3°10’28”, clean gravel mixed with shell grit, 20 m deep (29 May 2023); same locality, N42°25’59” E3°10’28”, clean medium sand, 18 m deep (16 July 2023).</p><p><b>Material examined</b>. Live observations and photographs. Fifteen whole mounts, one of which designated holotype (FMNH http://id.luomus.fi/KV. 544), the rest deposited as reference material in the collections of Hasselt University (HU XXIII. 3.06 – HU XXIII. 3.19).</p><p><b>Etymology</b>. The species name refers to the type locality on the Azores.</p><p><b>Additional remarks</b>. The sclerotised parts of <i>L. azorensis</i> <b>sp. nov.</b> and <i>L. peresi</i> are similar but can be distinguished by several features. The prostate stylet of <i>L. azorensis</i> <b>sp. nov.</b> is bent more or less over 90°, whereas that of <i>L. peresi</i> curves along its entire length to almost 180°. The thickened proximal rims of this stylet are ear-shaped in both species; however, in <i>L. peresi</i> these rims are straight and asymmetrical, one being larger than the other, whereas they have a more rounded and symmetrical appearance in <i>L. azorensis</i> <b>sp. nov.</b> Moreover, the accessory stylet in <i>L. azorensis</i> <b>sp. nov.</b> is more slender than in <i>L. peresi</i>, giving the copulatory organ an overall more ‘elegant’ appearance.</p>