{"id":27924,"date":"2026-02-01T18:31:12","date_gmt":"2026-02-01T17:31:12","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=27924"},"modified":"2026-02-01T18:31:13","modified_gmt":"2026-02-01T17:31:13","slug":"azuragrion-vansomereni","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2026\/02\/01\/azuragrion-vansomereni\/","title":{"rendered":"Ghana - Azuragrion vansomereni (Pinhey, 1956)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1.webp\"><img decoding=\"async\" width=\"2183\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1.webp\" alt=\"Azuragrion vansomereni m\u00e2le, Ghana, mare entre Efutu et Akaikrom, 13\/01\/2026\" class=\"wp-image-27920 lazyload\" style=\"--smush-placeholder-width: 2183px; --smush-placeholder-aspect-ratio: 2183\/1204;aspect-ratio:1.813144049064475;width:638px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1.webp 2183w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1-768x424.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1-1536x847.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1-2048x1130.webp 2048w\" data-sizes=\"(max-width: 2183px) 100vw, 2183px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Azuragrion vansomereni m\u00e2le, Ghana, mare entre Efutu et Akaikrom, 13\/01\/20261<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Azuragrion vansomereni, Coenagrionidae, fait partie d'un genre qui comprend 6 esp\u00e8ces ; il est l'un des plus petits avec une aile post\u00e9rieure de 11 \u00e0 14 mm, soit une longueur totale d'environ 21 \u00e0 23 mm. Les anglosaxons le nomment <em>Tiny bluet<\/em>.<br>Quand on le voit de profil (on le voit mieux sur la femelle plus bas), on note l'absence quasi totale de ligne noire sur les sutures m\u00e9tapleurale et interpleurale, un d\u00e9tail qui le ferait classer parmi les Enallagma ; c'est ce qu'avait fait Pinhey, 1956 et c'est May, 2002, qui a mis de l'ordre dans les Enallagma ou Africallagma africains (et dans d'autres genres proches) et lui a fait int\u00e9grer ce genre.<\/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\/Azuragrion-vansomereni-male-4.webp\"><img decoding=\"async\" width=\"2043\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-4.webp\" alt=\"Azuragrion vansomereni m\u00e2le, Ghana, mare entre Efutu et Akaikrom, 13\/01\/2026\" class=\"wp-image-27923 lazyload\" style=\"--smush-placeholder-width: 2043px; --smush-placeholder-aspect-ratio: 2043\/1204;aspect-ratio:1.6968708117242586;width:646px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-4.webp 2043w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-4-768x453.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-4-1536x905.webp 1536w\" data-sizes=\"(max-width: 2043px) 100vw, 2043px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Azuragrion vansomereni m\u00e2le, Ghana, mare entre Efutu et Akaikrom, 13\/01\/2026<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Au Ghana, il n'y a qu'un seul Azuragrion, ce qui facilite l'identification ; car il est visuellement tr\u00e8s proche de A. nigridorsum. La diff\u00e9rence se fait au niveau des appendices anaux ; pour Azuragrion vansomereni, les cerques sont nettement plus longs que les paraproctes, ils sont de tailles \u00e9gales pour A. nigridorsum.<br><br>La r\u00e9partition de l'Azuragrion vansomereni couvre une vaste ceinture sah\u00e9lienne s'\u00e9tendant de l'Afrique de l'Ouest (S\u00e9n\u00e9gal) jusqu'en Afrique centrale et orientale ; l'esp\u00e8ce atteignait autrefois le centre de l'Arabie saoudite, o\u00f9 elle est aujourd'hui \u00e9teinte \u00e0 la suite de la destruction de ses habitats.<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\" style=\"border-style:none;border-width:0px;border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-left-radius:0px;border-bottom-right-radius:0px\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-2.webp\"><img decoding=\"async\" width=\"1915\" height=\"1204\" data-id=\"27921\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-2.webp\" alt=\"Azuragrion vansomereni m\u00e2le, Ghana, mare entre Efutu et Akaikrom, 13\/01\/2026\" class=\"wp-image-27921 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-2.webp 1915w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-2-768x483.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-2-1536x966.webp 1536w\" data-sizes=\"(max-width: 1915px) 100vw, 1915px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1915px; --smush-placeholder-aspect-ratio: 1915\/1204;\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1.webp\"><img decoding=\"async\" width=\"2183\" height=\"1204\" data-id=\"27920\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1.webp\" alt=\"Tiny bluet male, Ghana, pond between Efutu and Akaikrom, 13\/01\/2026\" class=\"wp-image-27920 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1.webp 2183w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1-768x424.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1-1536x847.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-male-1-2048x1130.webp 2048w\" data-sizes=\"(max-width: 2183px) 100vw, 2183px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 2183px; --smush-placeholder-aspect-ratio: 2183\/1204;\" \/><\/a><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">Azuragrion vansomereni m\u00e2le, Ghana, mare entre Efutu et Akaikrom, 13\/01\/20261<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">On les rencontre sur les eaux dormantes ou les courants tr\u00e8s faibles pourvus de v\u00e9g\u00e9tation \u00e9mergente. Nous les avons contact\u00e9s, en tr\u00e8s faible nombre, <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/13-01-26-16h56-Efutu.webp\">sur une mare de faible profondeur<\/a>. Ils se sont r\u00e9v\u00e9l\u00e9s difficiles \u00e0 approcher car ils sont pos\u00e9s sur des herbes ou des rameaux \u00e9mergents \u00e0 ras de l'eau, voire m\u00eame directement sur l'eau, et sont sensibles au moindre mouvement de leur support ou de l'observateur.<br>Ils partageaient cet espace avec quelques Diplacodes luminans et Lestes dissimulans ; nous ne reverrons pas ailleurs ces trois esp\u00e8ces.<br>Nous n'avons vu qu'une seule femelle, tr\u00e8s bri\u00e8vement. \u00c0 part Ischnura elegans et Lestes dissimulans, c'\u00e9tait les seuls zygopt\u00e8res pr\u00e9sents sur cette mare. L'identification de cette femelle est donc certaine, on retrouve l'absence de traces noires sur les sutures thoraciques et la ligne bleue qui traverse l'espace postoculaire.<\/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\/Azuragrion-vansomereni-femelle-1.webp\"><img decoding=\"async\" width=\"2100\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-femelle-1.webp\" alt=\"Azuragrion vansomereni femelle, Ghana, mare entre Efutu et Akaikrom, 13\/01\/2026\" class=\"wp-image-27919 lazyload\" style=\"--smush-placeholder-width: 2100px; --smush-placeholder-aspect-ratio: 2100\/1204;aspect-ratio:1.7442348008385744;width:717px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-femelle-1.webp 2100w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-femelle-1-768x440.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-femelle-1-1536x881.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Azuragrion-vansomereni-femelle-1-2048x1174.webp 2048w\" data-sizes=\"(max-width: 2100px) 100vw, 2100px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Azuragrion vansomereni femelle, Ghana, mare entre Efutu et Akaikrom, 13\/01\/2026<\/figcaption><\/figure>\n\n\n\n\n\n<p><strong>\u00c9tymologie\u00a0<br \/><\/strong><br \/><strong>Azuragrion<\/strong> est compos\u00e9 du latin <em>azureus<\/em>, pour <em>bleu<\/em>, et de<em> agrion<\/em>, du latin <em>agrios<\/em>, <em>vivant dans les champs, sauvage<\/em>, si souvent utilis\u00e9 pour signifier l'appartenance au Coenagrionidae. Et, en effet, tous les Azuragrions sont bleus (et noirs).<br \/><strong>Vansomereni<\/strong> est un hommage\u00a0 \u00e0 Victor Gurner Logan van Someren, entomologiste britannique ayant collect\u00e9 des sujets durant la p\u00e9riode coloniale au Kenya et en Ouganda. Il a transmis ses collections \u00e0 Pinhey et en particulier ce sujet d'Ouganda que l'auteur d\u00e9crira comme <em>Enallagma vansomereni<\/em>.<\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:13px\"><strong>May, 2002<\/strong> - <a href=\"https:\/\/resjournals.onlinelibrary.wiley.com\/doi\/10.1046\/j.1365-3113.2002.00188.x\">Phylogeny and taxonomy of the African genus <em>Azuragrion<\/em> with description of a new genus, <em>Africallagma<\/em> (Odonata: Coenagrionidae)<\/a>. <em>Odonatologica<\/em>, <strong>31<\/strong>(3), pages 285\u2013301.<br><strong>Pinhey, 1956<\/strong> - <em>Some dragonflies of East and Central Africa and a rarity from Mauritius<\/em> - Occasional Papers of the Coryndon Memorial Museum - Volume 4, pages 17\u201341 [acc\u00e8s payant].<\/p>\n\n\n\n<div style=\"height:31px\" 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>Azuragrion vansomereni, Coenagrionidae, fait partie d'un genre qui comprend 6 esp\u00e8ces ; il est l'un des plus petits avec une aile post\u00e9rieure de 11 \u00e0 14 mm, soit une longueur totale d'environ 21 \u00e0 23 mm. Les anglosaxons le nomment Tiny bluet.Quand on le voit de profil (on le voit mieux sur la femelle plus [&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":[38666,38663],"tags":[38667],"class_list":["post-27924","post","type-post","status-publish","format-image","hentry","category-coenagrionidae-ghana","category-ghana","tag-coenagrionidae-ghana","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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