{"id":29483,"date":"2026-06-03T18:49:27","date_gmt":"2026-06-03T16:49:27","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=29483"},"modified":"2026-06-03T20:26:16","modified_gmt":"2026-06-03T18:26:16","slug":"urothemis-venata","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2026\/06\/03\/urothemis-venata\/","title":{"rendered":"Ghana &#8211; Urothemis venata \u00a0\u00a0Dijkstra, M\u00e9zi\u00e8re &amp; Kipping, 2015"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-2.webp\"><img decoding=\"async\" width=\"1058\" height=\"1016\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-2.webp\" alt=\"Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026\" class=\"wp-image-29480 lazyload\" style=\"--smush-placeholder-width: 1058px; --smush-placeholder-aspect-ratio: 1058\/1016;aspect-ratio:1.0413388642540409;width:473px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-2.webp 1058w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-2-768x738.webp 768w\" data-sizes=\"(max-width: 1058px) 100vw, 1058px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Urothemis venata est une nouvelle esp\u00e8ce pour le Ghana ; il n&rsquo;a \u00e9t\u00e9 d\u00e9crit qu&rsquo;en 2015, m\u00eame si son existence avait \u00e9t\u00e9 sugg\u00e9r\u00e9e par une photo de 1983 (Dijkstra et al., 2015). Il est vraisemblable qu&rsquo;il ait \u00e9t\u00e9 longtemps confondu avec le seul autre Urothemis bleu, beaucoup plus commun et plus facile \u00e0 approcher, <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/urothemis-edwardsii-male-1.jpg\">U. edwardsii<\/a> (car nous l&rsquo;avons observ\u00e9 sur une mare, tr\u00e8s loin de nous, \u00e0 environ une quinzaine de m\u00e8tres). Il y a cinq Urothemis en Afrique, 9 dans le monde, tous rouges sauf les deux cit\u00e9s.<br>Il est effectivement tr\u00e8s proche de son cousin bleu, m\u00eame si, \u00e0 distance, la nervation pr\u00e8s des nervures principales est largement plus rouge, comme on le note tr\u00e8s facilement ci-dessous. En anglais, il prend d&rsquo;ailleurs le nom de <em>Red-veined Basker<\/em>.<\/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\/Urothemis-venata-male-1.webp\"><img decoding=\"async\" width=\"1698\" height=\"1134\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-1.webp\" alt=\"Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026\" class=\"wp-image-29479 lazyload\" style=\"--smush-placeholder-width: 1698px; --smush-placeholder-aspect-ratio: 1698\/1134;aspect-ratio:1.4974031984367768;width:593px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-1.webp 1698w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-1-768x513.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-1-1536x1026.webp 1536w\" data-sizes=\"(max-width: 1698px) 100vw, 1698px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Une autre diff\u00e9rence \u00e9vidente est l&rsquo;absence quasi totale de marque sombre sur l&rsquo;abdomen, couvert d&rsquo;une pulv\u00e9rulence bleue, alors que <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/urothemis-edwardsii-male-1.jpg\">U. edwardsii<\/a> montre une large bande noire sur toute sa longueur (noter tout de m\u00eame pour ce dernier la nervation ant\u00e9rieure l\u00e9g\u00e8rement teint\u00e9e de rouge).<\/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\/Urothemis-venata-male-4.webp\"><img decoding=\"async\" width=\"712\" height=\"540\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-4.webp\" alt=\"Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026\" class=\"wp-image-29482 lazyload\" style=\"--smush-placeholder-width: 712px; --smush-placeholder-aspect-ratio: 712\/540;aspect-ratio:1.318565564247541;width:556px;height:auto\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Je ne peux pas donner la taille exacte de cet Urothemis, les descripteurs ne donnant pas la taille de l&rsquo;abdomen (comme c&rsquo;est pourtant l&rsquo;usage) mais uniquement la taille de l&rsquo;aile post\u00e9rieure, 31 \u00e0 34 mm, pr\u00e9cisant que c&rsquo;est <em>une libellule d&rsquo;assez grande taille<\/em>. U. edwardsii atteint 38 \u00e0 44 mm.<br>Nous l&rsquo;avons trouv\u00e9 sur une mare ou un \u00e9tang, bien v\u00e9g\u00e9talis\u00e9, au bord de la route, mais bord\u00e9 par la for\u00eat sur ses autres c\u00f4t\u00e9s, une pi\u00e8ce d&rsquo;eau extraordinaire puisque nous y avons trouv\u00e9 3 nouvelles esp\u00e8ces pour le Ghana ! Il fr\u00e9quenterait aussi les eaux temporaires.<br>Sa pr\u00e9sence n&rsquo;est actuellement confirm\u00e9e qu&rsquo;au Liberia et au Sierra Leone \u00e0 l&rsquo;ouest, au Congo et au Cameroun \u00e0 l&rsquo;est et au Nigeria. Nous confirmons ainsi sa pr\u00e9sence au Ghana et il est vraisemblable que l&rsquo;esp\u00e8ce ait une large distribution, mais soit vraisemblablement peu commune et discr\u00e8te (avant notre d\u00e9couverte, il n&rsquo;y avait que 6 ou 7 photos sur le Web).<\/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\/Urothemis-venata-male-3-1.webp\"><img decoding=\"async\" width=\"1195\" height=\"1004\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-3-1.webp\" alt=\"Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026\" class=\"wp-image-29495 lazyload\" style=\"--smush-placeholder-width: 1195px; --smush-placeholder-aspect-ratio: 1195\/1004;aspect-ratio:1.190247491365392;width:521px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-3-1.webp 1195w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Urothemis-venata-male-3-1-768x645.webp 768w\" data-sizes=\"(max-width: 1195px) 100vw, 1195px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Urothemis venata m\u00e2le, Ghana, Esambolo, 19\/01\/2026<\/figcaption><\/figure>\n\n\n\n<div style=\"height:33px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u00c9tymologie<\/strong><br><strong>Urothemis<\/strong>, du grec \u2013<em>ura<\/em>, qui signifie \u2013<em>queue<\/em>, en r\u00e9f\u00e9rence \u00e0 la longue lame vulvaire des femelles qui s\u2019\u00e9tend jusqu\u2019au 10\u00b0 segment.  Themis, \u2013 d\u00e9esse grecque de l\u2019ordre et de la justice, a \u00e9t\u00e9 utilis\u00e9 de nombreuses fois depuis Hagen (1861), et Brauer a suivi la mode en 1868 quand il a cr\u00e9\u00e9 ce genre, pour <em>U. bisignata<\/em>. Le nom de la d\u00e9esse de l\u2019ordre est particuli\u00e8rement bien adapt\u00e9 \u00e0 la taxonomie, science qui vise \u00e0 d\u00e9crire et ordonner les familles, genres et esp\u00e8ces.<br><strong>Venata<\/strong> : les auteurs \u00e9crivent : \u00ab\u00a0Latin \u201cveined\u201d for the artery-like red wing veins (feminine adjective) &#8211; Du latin \u00ab\u00a0vein\u00e9\u00a0\u00bb pour les nervures alaires rouges ressemblant \u00e0 des art\u00e8res (adjectif f\u00e9minin).\u00a0\u00bb<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:13px\">Dijkstra, K.-D.B., M\u00e9zi\u00e8re, N., and Kipping, J. (2015) &#8211; <a href=\"http:\/\/www.odonatologica.com\/wp-content\/uploads\/2015\/12\/Odonatologica_44-4-low_res.pdf\">Sixty new dragonfly and damselfly species from Africa (Odonata)<\/a>. Odonatologica, 44, 447-678, p. 656.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-vertical is-layout-flex wp-container-core-buttons-is-layout-2c90304e 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\/libellules-du-ghana-odonates-of-ghana\/\">Accueil Ghana<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"http:\/\/www.meslibellules.fr\/pagesweb\/divers\/liste-generale-odonates-du-site\/africa-odonates.php\">Liste africaine<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.meslibellules.fr\/blog\/\">Accueil<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Urothemis venata est une nouvelle esp\u00e8ce pour le Ghana ; il n&rsquo;a \u00e9t\u00e9 d\u00e9crit qu&rsquo;en 2015, m\u00eame si son existence avait \u00e9t\u00e9 sugg\u00e9r\u00e9e par une photo de 1983 (Dijkstra et al., 2015). Il est vraisemblable qu&rsquo;il ait \u00e9t\u00e9 longtemps confondu avec le seul autre Urothemis bleu, beaucoup plus commun et plus facile \u00e0 approcher, U. [&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":[38663,38664],"tags":[38793],"class_list":["post-29483","post","type-post","status-publish","format-image","hentry","category-ghana","category-libellulidae-ghana-2","tag-libellulidae-ghana","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - 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