{"id":18557,"date":"2024-03-08T08:56:58","date_gmt":"2024-03-08T07:56:58","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=18557"},"modified":"2026-01-09T08:35:49","modified_gmt":"2026-01-09T07:35:49","slug":"uracis-ovipositrix","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2024\/03\/08\/uracis-ovipositrix\/","title":{"rendered":"Uracis ovipositrix (Calvert, 1909)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-2.webp\"><img decoding=\"async\" width=\"1602\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-2.webp\" alt=\"Uracis ovipositrix m\u00e2le immature, P\u00e9rou, ARC (Chino), 16\/08\/2023\" class=\"wp-image-18555 lazyload\" style=\"--smush-placeholder-width: 1602px; --smush-placeholder-aspect-ratio: 1602\/1204;width:568px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-2.webp 1602w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-2-768x577.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-2-1536x1154.webp 1536w\" data-sizes=\"(max-width: 1602px) 100vw, 1602px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Uracis ovipositrix m\u00e2le immature, P\u00e9rou, ARC (Chino), 16\/08\/2023<\/figcaption><\/figure>\n\n\n\n<p>Il semble qu&rsquo;il n&rsquo;existe pas de forme aux ailes hyalines pour Uracis ovipositrix ; tous les sujets ont une marque apicale sombre, d\u00e9passant au moins la partie proximale du pt\u00e9rostigma. Il mesure environ 38 mm. On peut malheureusement le confondre facilement avec d&rsquo;autres Uracis, en particulier U. imbuta ou fastigiata.<br>Il faut donc recourir \u00e0 l&rsquo;examen de la nervation.<\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:38% auto\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-nervation.webp\"><img decoding=\"async\" width=\"530\" height=\"667\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-nervation.webp\" alt=\"Uracis ovipositrix m\u00e2le immature, P\u00e9rou, ARC (Chino), 16\/08\/2023\" class=\"wp-image-18556 size-full lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 530px; --smush-placeholder-aspect-ratio: 530\/667;\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<p>Seul le triangle de l&rsquo;aile ant\u00e9rieure est travers\u00e9 d&rsquo;une nervure, le triangle de l&rsquo;aile post\u00e9rieure est libre comme les deux supra triangles. Il partage cette nervation avec U. siemensi mais ce dernier n&rsquo;a que 2 rang\u00e9es de cellules dans le champ anal, Uracis ovipositrix en a 3.<br><br>J&rsquo;ai illustr\u00e9 <strong><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Champs-alaires-sur-Uracis-siemensi-male-1.webp\">ic<\/a><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Champs-alaires-sur-Uracis-siemensi-male.webp\">i<\/a><\/strong> les espaces alaires sur un Uracis siemensi, justement.<br>Un rappel des crit\u00e8res de nervation des Uracis est \u00e9galement disponible <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Recapitulatif-genre-Uracis-2.webp\"><strong>ici<\/strong><\/a>. <br><br>Toutes ces donn\u00e9es proviennent de Costa et Santos (1997).<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:23px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Les deux photos ci-dessus et celle ci-dessous illustrent le m\u00eame m\u00e2le immature avant qu&rsquo;il ne se couvre d&rsquo;une pruinosit\u00e9 bleu\u00e2tre.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-1.webp\"><img decoding=\"async\" width=\"1474\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-1.webp\" alt=\"Uracis ovipositrix m\u00e2le immature, P\u00e9rou, ARC (Chino), 16\/08\/2023\" class=\"wp-image-18554 lazyload\" style=\"--smush-placeholder-width: 1474px; --smush-placeholder-aspect-ratio: 1474\/1204;width:484px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-1.webp 1474w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-immature-1-768x627.webp 768w\" data-sizes=\"(max-width: 1474px) 100vw, 1474px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Uracis ovipositrix m\u00e2le immature, P\u00e9rou, ARC (Chino), 16\/08\/2023<\/figcaption><\/figure>\n\n\n\n<p>Les trois rencontres que j&rsquo;ai faites au P\u00e9rou avec cette esp\u00e8ce n&rsquo;ont pas \u00e9t\u00e9 glorieuses&#8230; et je ne l&rsquo;avais jamais rencontr\u00e9e auparavant. Si certain de mes compagnons ont rencontr\u00e9 une femelle, je l&rsquo;ai manqu\u00e9e, ce  qui est bien dommage, car son pseudo-ovipositeur est spectaculairement long et lui vaut son nom d&rsquo;esp\u00e8ce.<br>Il vit sur les mares foresti\u00e8res.<br>On le rencontre tout autour du bassin amazonien,  y compris la Guyane fran\u00e7aise et le Suriname qui ne figurent pas sur la <a href=\"https:\/\/www.iucnredlist.org\/species\/49254313\/49256205#geographic-range\">IUCN Red List<\/a><\/p>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-1.webp\"><img decoding=\"async\" width=\"1303\" height=\"1029\" data-id=\"18551\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-1.webp\" alt=\"Uracis ovipositrix m\u00e2le, P\u00e9rou, ARC (Chino), 20\/08\/2023\" class=\"wp-image-18551 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-1.webp 1303w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-1-768x607.webp 768w\" data-sizes=\"(max-width: 1303px) 100vw, 1303px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1303px; --smush-placeholder-aspect-ratio: 1303\/1029;\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-3.webp\"><img decoding=\"async\" width=\"1520\" height=\"1204\" data-id=\"18553\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-3.webp\" alt=\"Uracis ovipositrix m\u00e2le, P\u00e9rou, ARC Tabano Lake, 21\/08\/2023\" class=\"wp-image-18553 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-3.webp 1520w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/uracis-ovipositrix-male-3-768x608.webp 768w\" data-sizes=\"(max-width: 1520px) 100vw, 1520px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1520px; --smush-placeholder-aspect-ratio: 1520\/1204;\" \/><\/a><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">Uracis ovipositrix m\u00e2le, P\u00e9rou, ARC (Chino), 20\/08\/2023, ARC Tabano Lake, 21\/08\/2023<\/figcaption><\/figure>\n\n\n\n<p>On note que le sujet de droite, ci-dessus, a d\u00e9j\u00e0 bien v\u00e9cu, mais a sans doute fait de mauvaises rencontres.<br><br><strong>\u00c9tymologie<\/strong><br><strong>Uracis<\/strong>\u00a0du grec<em>\u00a0oura<\/em>\u00a0pour\u00a0<em>queue<\/em>\u00a0et de\u00a0<em>akis<\/em>\u00a0signifiant\u00a0<em>aiguille<\/em>. Ceci en r\u00e9f\u00e9rence \u00e0 la longue plaque sous g\u00e9nitale de la femelle appel\u00e9 pseudo-ovipositeur. Rambur la d\u00e9crit lorsqu\u2019il cr\u00e9e le genre, et tr\u00e8s en d\u00e9tail, pour la premi\u00e8re esp\u00e8ce qu\u2019il place dans le genre, nomm\u00e9e U.\u00a0<em>quadra<\/em>\u00a0(futur U. imbuta). Voici ce qu\u2019il \u00e9crit \u00e0 propos de ce nouveau genre\u00a0: \u00ab\u00a0bord vulvaire prolong\u00e9 en une longue pointe canalicul\u00e9e d\u00e9passant l\u2019anus, accompagn\u00e9 d\u2019un prolongement semblable du segment suivant, qui pr\u00e9sente une petite car\u00e8ne pour s\u2019engrener dedans.\u00a0\u00bb<br><strong>Ovipositrix<\/strong>, du latin <em>ovum<\/em> &#8211; <em>\u0153uf<\/em>, et <em>positorem<\/em> &#8211;<em>celui qui pose<\/em>, bien s\u00fbr en r\u00e9f\u00e9rence au tr\u00e8s long pseudo-ovipositeur de cette esp\u00e8ce. <em>Trix<\/em> est un suffixe utilis\u00e9 pour indiquer le genre f\u00e9minin.<\/p>\n\n\n\n<div style=\"height:38px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Costa &amp; Santos, 1997<\/strong>\u00a0\u2013\u00a0<a href=\"https:\/\/natuurtijdschriften.nl\/pub\/592183\/OJIOS1997026001001.pdf\">Intra-and interspecific variation in the genus Uracis Rambur, 1842, with a key to the known species (Anisoptera: Libellulidae)<\/a>.\u00a0<em>Odonatologica<\/em>,\u00a0<em>26<\/em>(1), 1\u20137.<\/p>\n\n\n\n<div style=\"height:28px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.meslibellules.fr\/blog\/odonates-du-perou-peruvian-odonates\/\">Accueil P\u00e9rou<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Il semble qu&rsquo;il n&rsquo;existe pas de forme aux ailes hyalines pour Uracis ovipositrix ; tous les sujets ont une marque apicale sombre, d\u00e9passant au moins la partie proximale du pt\u00e9rostigma. Il mesure environ 38 mm. On peut malheureusement le confondre facilement avec d&rsquo;autres Uracis, en particulier U. imbuta ou fastigiata.Il faut donc recourir \u00e0 l&rsquo;examen [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1304,1303],"tags":[1306,1305],"class_list":["post-18557","post","type-post","status-publish","format-image","hentry","category-libellulidae-perou-2","category-perou","tag-libellulidae-perou","tag-perou","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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