{"id":2729,"date":"2019-04-11T08:53:03","date_gmt":"2019-04-11T06:53:03","guid":{"rendered":"http:\/\/www.meslibellules.fr\/blog\/?p=2729"},"modified":"2025-12-10T08:14:48","modified_gmt":"2025-12-10T07:14:48","slug":"vietnam-2018-ditch-jewel","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2019\/04\/11\/vietnam-2018-ditch-jewel\/","title":{"rendered":"Vietnam 2018 &#8211; Brachythemis contaminata (Fabricius, 1793)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminat-3.jpg\"><img decoding=\"async\" width=\"1408\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminat-3.jpg\" alt=\"Ditch Jewel male, Vietnam, between Hano\u00ef et Cuc Phuong, 06\/13\/2018\" class=\"wp-image-2727 lazyload\" style=\"--smush-placeholder-width: 1408px; --smush-placeholder-aspect-ratio: 1408\/1204;width:427px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminat-3.jpg 1408w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminat-3-768x657.jpg 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminat-3-1200x1026.jpg 1200w\" data-sizes=\"(max-width: 1408px) 100vw, 1408px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Ditch Jewel m\u00e2le, Vietnam, entre Hano\u00ef et Cuc Phuong, 13\/06\/2018<\/figcaption><\/figure>\n\n\n\n<p style=\"font-size:15px\">Brachythemis contaminata est le <em>Ditch Jewel<\/em> des anglophones ; et c&rsquo;est vraiment un petit bijou m\u00eame s&rsquo;il est commun.<br><br>Il accepte toutes sortes d&rsquo;habitats, \u00e9ventuellement d\u00e9grad\u00e9s par les humains. Il est peu farouche et parfois pr\u00e9sent en grand nombre. Je l&rsquo;ai rencontr\u00e9 sur des mares, des foss\u00e9s, des canaux d&rsquo;irrigation, des flaques, diff\u00e9rentes rivi\u00e8res petites ou grandes comme les rives du M\u00e9kong, ou le gigantesque lac central du Cambodge, le Tonl\u00e9 Sap au Cambodge.<br><br>Il y a donc peu de chances de le rater en Asie du Sud-Est et c&rsquo;\u00e9tait ma 7\u1d49&nbsp;rencontre, la seconde au Vietnam, apr\u00e8s le Cambodge, le Laos, le <a href=\"https:\/\/www.meslibellules.fr\/voyages\/srilanka\/brachythemis-contaminata\/brachythemis-contaminata-1.php\">Sri Lanka<\/a>, la <a href=\"https:\/\/www.meslibellules.fr\/voyages\/malaisie\/brachythemis-contaminata\/brachythemis-contaminata-male-1.php\">Malaisie<\/a> et le <a href=\"https:\/\/www.meslibellules.fr\/voyages\/rajasthan\/brachythemis-contaminata\/brachythemis-contaminata-male.php\">Rajasthan<\/a>. Je le rencontrerai plus tard en Tha\u00eflande. Je ne l&rsquo;ai \u00ab\u00a0rat\u00e9\u00a0\u00bb qu&rsquo;au sud de la Chine (Yunnan et Guizhou) o\u00f9 elle est bien pr\u00e9sente, contrairement \u00e0 ce qu&rsquo;\u00e9crit l&rsquo;<a href=\"https:\/\/www.iucnredlist.org\/species\/167368\/6335347#geographic-range\">IUCN<\/a> (voir <a href=\"https:\/\/d-nb.info\/1080000143\/34\"><em>The Superfamily Calopterygoidea in South China : taxonomy and distribution<\/em>. <\/a>Progress Report for 2009 surveys, Zhang Haomiao).<br><br>Le Ditch Jewel, <em>Brachythemis contaminata<\/em> mesure que 29 \u00e0 31 mm au total (Ngiam &amp; Ng, 2022).<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminata-femelle.jpg\"><img decoding=\"async\" width=\"1664\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminata-femelle.jpg\" alt=\"Ditch Jewel female, Vietnam, Tam Dao, 06\/03\/2018\" class=\"wp-image-2728 lazyload\" style=\"--smush-placeholder-width: 1664px; --smush-placeholder-aspect-ratio: 1664\/1204;width:502px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminata-femelle.jpg 1664w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminata-femelle-768x556.jpg 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2019\/04\/brachythemis-contaminata-femelle-1200x868.jpg 1200w\" data-sizes=\"(max-width: 1664px) 100vw, 1664px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Brachythemis contaminata femelle, Vietnam, Tam Dao, 03\/06\/2018<\/figcaption><\/figure>\n\n\n\n<p><strong>\u00c9tymologie<\/strong><br><strong>Brachythemis<\/strong> ; du grec&nbsp;<em>brachy<\/em>&nbsp;pour&nbsp;<em>court<\/em>, pour insister sur l\u2019abdomen court et trapu. Et, de Th\u00e9mis, d\u00e9esse grecque de l&rsquo;Ordre et de la Justice. Ce choix respecte la <em>mode<\/em> en cours \u00e0 cette \u00e9poque d&rsquo;attribuer des noms relevant de l&rsquo;histoire ou de la mythologie. De plus, le choix de cette d\u00e9esse est particuli\u00e8rement adapt\u00e9 au classement et au respect des r\u00e8gles qu&rsquo;implique la taxonomie.<br><strong>Contaminata<\/strong>, du latin <em>contaminatus<\/em>, souill\u00e9, impur. Le Dr. Heinrich Fliedner (Fliedner, 2006) propose qu&rsquo;on explique cette curieuse d\u00e9nomination par le fait que \u00ab\u00a0<em>la coloration ocre dans la partie proximale des ailes est plus fonc\u00e9e pr\u00e8s du milieu de la c\u00f4te (ou bord costal)<\/em>.\u00a0\u00bb Je suis assez sceptique car je ne vois pas ce que cette suggestion explique, ni ce qui est souill\u00e9 ou impur, et on ne peut pas douter des qualit\u00e9s de latiniste scientifique de Fabricius.<br>Aussi, je pense plut\u00f4t que Fabricius, qui n&rsquo;a pas l&rsquo;habitude d&rsquo;observer et de d\u00e9crire des odonates aux ailes color\u00e9es, a eu en main un sujet qui avait beaucoup et longtemps voyag\u00e9 (des mois, pour le moins) ; un sujet dess\u00e9ch\u00e9, terni et dont les ailes sont souill\u00e9s, pour lui, au sens propre. <br>Fabricius qui vit au Danemark, nous dit en effet que le sujet qu&rsquo;il d\u00e9crit vient d&rsquo;Inde, de la collection de T\u00f8nder Lund (1753\u20131832). Il pr\u00e9cise \u00ab\u00a0<em>L. 6 maculatae<\/em>\u00a0\u00bb ; c&rsquo;est la sixi\u00e8me <em>Libellula<\/em> aux ailes macul\u00e9es qu&rsquo;il d\u00e9crit dans  son <em>Entomologia Systematica<\/em>. Puis, plus loin : \u00ab\u00a0<em>Toutes les ailes blanches, avec une grande ombre, jaune<\/em> \u00ab\u00a0.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<div style=\"height:31px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Fabricius, 1793<\/strong> &#8211; Fabricius, Johann Christian, Proft, Christian Gottlob (Kopenhagen), Mohr, Christian Friedrich (Kiel), &amp; Storch, \u2026 (Kopenhagen). (1792). <a href=\"https:\/\/www.biodiversitylibrary.org\/page\/52726921#page\/394\/mode\/1up\">Entomologia systematica emandata et aucta. Secundum classes, ordines, genera, species adjectis synonimis, locis, observationibus descriptionibus<\/a> (Vol. 2, p. 382). impensis Christ. Gottl. Proft. https:\/\/www.biodiversitylibrary.org\/page\/52726921 <br><strong>Fliedner, 2006<\/strong> &#8211; <a href=\"https:\/\/www.zobodat.at\/pdf\/Virgo_9_I-XXVIII.pdf\">The scientific names of the Odonata in Burmeister\u2019s \u00ab\u00a0Handbuch der Entomologie\u00a0\u00bb<\/a><br><strong>Ngiam &amp; Ng, 2022<\/strong> &#8211; A photographic guide to the Dragonflies and Damselflies of Singapore &#8211; John Beaufoy Publishing \u2013 2022<\/p>\n\n\n\n<div style=\"height:35px\" 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\/voyages\/vietnam\/brachythemis-contaminata\/brachythemis-contaminata.php\">Retour<\/a><\/div>\n<\/div>\n\n\n\n\n\n<div class=\"wp-block-buttons is-vertical is-layout-flex wp-container-core-buttons-is-layout-fe9cc265 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-vietnam-2012-2018\/\">Accueil Vietnam<\/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\/asia-odonates.php\">Liste Asie<\/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>Brachythemis contaminata est le Ditch Jewel des anglophones ; et c&rsquo;est vraiment un petit bijou m\u00eame s&rsquo;il est commun. Il accepte toutes sortes d&rsquo;habitats, \u00e9ventuellement d\u00e9grad\u00e9s par les humains. Il est peu farouche et parfois pr\u00e9sent en grand nombre. Je l&rsquo;ai rencontr\u00e9 sur des mares, des foss\u00e9s, des canaux d&rsquo;irrigation, des flaques, diff\u00e9rentes rivi\u00e8res petites [&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":[15,54],"tags":[],"class_list":["post-2729","post","type-post","status-publish","format-image","hentry","category-libellulidae","category-vietnam","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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