{"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 class=\"wp-block-paragraph\">Il semble qu'il n'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'autres Uracis, en particulier U. imbuta ou fastigiata.<br>Il faut donc recourir \u00e0 l'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 class=\"wp-block-paragraph\">Seul le triangle de l'aile ant\u00e9rieure est travers\u00e9 d'une nervure, le triangle de l'aile post\u00e9rieure est libre comme les deux supra triangles. Il partage cette nervation avec U. siemensi mais ce dernier n'a que 2 rang\u00e9es de cellules dans le champ anal, Uracis ovipositrix en a 3.<br><br>J'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 class=\"wp-block-paragraph\">Les deux photos ci-dessus et celle ci-dessous illustrent le m\u00eame m\u00e2le immature avant qu'il ne se couvre d'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 class=\"wp-block-paragraph\">Les trois rencontres que j'ai faites au P\u00e9rou avec cette esp\u00e8ce n'ont pas \u00e9t\u00e9 glorieuses... et je ne l'avais jamais rencontr\u00e9e auparavant. Si certain de mes compagnons ont rencontr\u00e9 une femelle, je l'ai manqu\u00e9e, ce  qui est bien dommage, car son pseudo-ovipositeur est spectaculairement long et lui vaut son nom d'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 class=\"wp-block-paragraph\">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> - <em>\u0153uf<\/em>, et <em>positorem<\/em> -<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 class=\"wp-block-paragraph\"><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'il n'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'autres Uracis, en particulier U. imbuta ou fastigiata.Il faut donc recourir \u00e0 l'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 v27.8 - 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