{"id":28636,"date":"2026-02-23T14:21:51","date_gmt":"2026-02-23T13:21:51","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=28636"},"modified":"2026-02-23T14:43:47","modified_gmt":"2026-02-23T13:43:47","slug":"gynacantha-cylindrata","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2026\/02\/23\/gynacantha-cylindrata\/","title":{"rendered":"Ghana &#8211; Gynacantha cylindrata \u00a0\u00a0Karsch, 1891"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-1.webp\"><img decoding=\"async\" width=\"1971\" height=\"1504\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-1.webp\" alt=\"Gynacantha cylindrata m\u00e2le, Ghana, Bobiri Forest Reserve, 22\/1\/2026\" class=\"wp-image-28633 lazyload\" style=\"--smush-placeholder-width: 1971px; --smush-placeholder-aspect-ratio: 1971\/1504;aspect-ratio:1.3105310531053105;width:497px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-1.webp 1971w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-1-768x586.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-1-1536x1172.webp 1536w\" data-sizes=\"(max-width: 1971px) 100vw, 1971px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Gynacantha cylindrata m\u00e2le, Ghana, Bobiri Forest Reserve, 22\/1\/2026<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Il y a pourtant 7 Gynacantha au Ghana (13 en Afrique) mais j&rsquo;avais d\u00e9j\u00e0 rencontr\u00e9 Gynacantha cylindrata <a href=\"https:\/\/www.meslibellules.fr\/benin\/pages_web_benin\/gynacantha-cylindrata\/gynacantha-cylindrata-big.jpg\">au B\u00e9nin<\/a>, en 2008. Heureusement nous en contacterons une autre \u00e0 plusieurs reprises, G. bullata.<br>Nous avons cherch\u00e9 ces esp\u00e8ces nocturnes le matin (avant que les autres esp\u00e8ces ne soient actives), <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/22-01-2026-08-h-35-Bobiri-Forest-Reserve-1.webp\">le long des sentiers de d\u00e9bardage<\/a>, en entrant en for\u00eat d\u00e8s que la v\u00e9g\u00e9tation le permettait, inspectant les branches, les arbustes, les lianes verticales ; en effet, on les trouve toujours pendant verticalement le long d&rsquo;un support.<br><br>Il est tr\u00e8s proche de G. vesiculata que nous esp\u00e9rions rencontrer ; il s&rsquo;en distingue, entre autres, par ses appendices anaux. Ceux-ci pr\u00e9sentent une profonde excavation avant l&rsquo;apex (l&rsquo;extr\u00e9mit\u00e9 apparaissant triangulaire), cette excavation \u00e9tant pr\u00e9c\u00e9d\u00e9e par une importante touffe de soies. <br>La photo ci-dessous est un agrandissement d&rsquo;une des photos pr\u00e9sent\u00e9es et est donc de tr\u00e8s mauvaise qualit\u00e9\u2026 mais suffisante pour confirmer l&rsquo;identification.<\/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\/Gynacantha-cylindrata-male-appendices-anaux.webp\"><img decoding=\"async\" width=\"562\" height=\"390\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-appendices-anaux-e1771577564175.webp\" alt=\"Gynacantha cylindrata m\u00e2le, appendices anaux, Ghana, Bobiri Forest Reserve, 22\/1\/2026\" class=\"wp-image-28635 lazyload\" style=\"--smush-placeholder-width: 562px; --smush-placeholder-aspect-ratio: 562\/390;width:389px;height:auto\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Gynacantha cylindrata m\u00e2le, appendices anaux, Ghana, Bobiri Forest Reserve, 22\/1\/2026<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Karsch donne la longueur de l&rsquo;abdomen du m\u00e2le, 60 mm ; l&rsquo;insecte entier mesure environ 81 \u00e0 82 mm (l&rsquo;\u00e9quivalent d&rsquo;un bel Anax imperator).<br>On le trouve en g\u00e9n\u00e9ral en dehors de sa zone de reproduction, qui sont des mares, souvent temporaires, en for\u00eat ; ils sont cr\u00e9pusculaires (grands yeux), volant \u00e0 l&rsquo;aube ou \u00e0 la tomb\u00e9e de la nuit, sous la pluie parfois, et restent dans la v\u00e9g\u00e9tation dans la journ\u00e9e.<br><br>On le trouve de la Guin\u00e9e \u00e0 l&rsquo;ouest \u00e0 l&rsquo;Ouganda \u00e0 l&rsquo;est, et au sud du Gabon \u00e0 la Tanzanie.<br><a href=\"https:\/\/www.iucnredlist.org\/species\/59874\/72359501#geographic-range\">IUCN Red List<\/a>.<br><br>En anglais, il prend le nom de <em>Greater Girdled Duskhawker<\/em> soulignant qu&rsquo;il est plus grand que G. bullata.<\/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\/Gynacantha-cylindrata-male-2.webp\"><img decoding=\"async\" width=\"1814\" height=\"1504\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-2.webp\" alt=\"Greater Girdled Duskhawker male, Ghana, Bobiri Forest Reserve, 22\/1\/2026\" class=\"wp-image-28634 lazyload\" style=\"--smush-placeholder-width: 1814px; --smush-placeholder-aspect-ratio: 1814\/1504;aspect-ratio:1.2061467091910698;width:496px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-2.webp 1814w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-2-768x637.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Gynacantha-cylindrata-male-2-1536x1274.webp 1536w\" data-sizes=\"(max-width: 1814px) 100vw, 1814px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Gynacantha cylindrata m\u00e2le, Ghana, Bobiri Forest Reserve, 22\/1\/2026<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u00c9tymologie<\/strong> Gynacantha cylindrata<br>Le terme\u00a0<strong>Gynacantha<\/strong>\u00a0(voir Endersby &amp; Fliedner) a \u00e9t\u00e9 cr\u00e9\u00e9 par Rambur \u00e0 partir de deux mots grecs : gyne<em>\u00a0<\/em>pour\u00a0<em>femelle<\/em>\u00a0et\u00a0a<em>cantha<\/em>\u00a0pour\u00a0<em>\u00e9pine<\/em>, car les femelles de ce genre portent 2 \u00e9pines sous le 10\u1d49 segment. Rambur \u00e9crit : \u00ab\u00a0\u2026 <em>dernier segment chez les femelles, saillant et prolong\u00e9 inf\u00e9rieurement, garni d\u2019\u00e9pines longues (2 \u00e0 3 seulement dans les esp\u00e8ces que je connais)<\/em>\u00ab\u00a0.<br><strong>Cylindrata<\/strong>, du latin cylindrus pour cylindre et du suffixe -atus signifiant dot\u00e9 de, pour son \u00ab\u00a0<em>abdomen cylindrique, non renfl\u00e9 \u00e0 la base<\/em>\u00a0\u00bb [quand on le compare \u00e0 Gynacantha bullata].<\/p>\n\n\n\n<div style=\"height:51px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:13px\">Endersby Ian &amp; Fliedner Heinrich &#8212; <a href=\"https:\/\/www.researchgate.net\/publication\/283318421_The_Naming_of_Australia's_Dragonflies\">The Naming of Australia\u2019s Dragonflies<\/a> &#8211; Busybird publishing.<br>Karsch,1891 &#8211; <a href=\"https:\/\/www.biodiversitylibrary.org\/page\/25340186#page\/294\/mode\/1up\"><em>Kritik des Systems der Aeschniden<\/em><\/a>. Entomologische Nachrichten, Vol. 17, issue 18, 273-290 &#8211; P. 282.<br>Karsch,1891 &#8211; <a href=\"https:\/\/www.biodiversitylibrary.org\/page\/25340186#page\/320\/mode\/1up\">Acht neue Aeschniden<\/a> &#8211; Entomologische Nachrichten, vol. 17, issue 20, 305-313 &#8211; P. 308.<\/p>\n\n\n\n<div style=\"height:38px\" 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>Il y a pourtant 7 Gynacantha au Ghana (13 en Afrique) mais j&rsquo;avais d\u00e9j\u00e0 rencontr\u00e9 Gynacantha cylindrata au B\u00e9nin, en 2008. Heureusement nous en contacterons une autre \u00e0 plusieurs reprises, G. bullata.Nous avons cherch\u00e9 ces esp\u00e8ces nocturnes le matin (avant que les autres esp\u00e8ces ne soient actives), le long des sentiers de d\u00e9bardage, en entrant [&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":[1290],"tags":[],"class_list":["post-28636","post","type-post","status-publish","format-image","hentry","category-non-classe-fr","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - 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