{"id":25502,"date":"2025-07-14T21:27:06","date_gmt":"2025-07-14T19:27:06","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=25502"},"modified":"2025-07-19T04:38:46","modified_gmt":"2025-07-19T02:38:46","slug":"chalybeothemis-fluviatilis","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2025\/07\/14\/chalybeothemis-fluviatilis\/","title":{"rendered":"Born\u00e9o &#8211; Chalybeothemis fluviatilis (Lieftinck, 1933)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-1.webp\"><img decoding=\"async\" width=\"1839\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-1.webp\" alt=\"Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025\" class=\"wp-image-25498 lazyload\" style=\"--smush-placeholder-width: 1839px; --smush-placeholder-aspect-ratio: 1839\/1204;width:615px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-1.webp 1839w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-1-768x503.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-1-1536x1006.webp 1536w\" data-sizes=\"(max-width: 1839px) 100vw, 1839px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025<\/figcaption><\/figure>\n\n\n\n<p>Ce n&rsquo;est qu&rsquo;en 2006 que Chalybeothemis fluviatilis (1)  a \u00e9t\u00e9 d\u00e9couvert au Sarawak et en 2007 (mais d\u00e9j\u00e0 connu de Brunei et du Kalimantan) il a trouv\u00e9 deux autres compagnons (2) pour peupler son genre jusqu&rsquo;alors monotypique. C&rsquo;est un petit Libellulidae aux yeux verts, de 29 \u00e0 30 mm de longueur totale (3), dont le thorax pr\u00e9sente des traces verticales sombres et une l\u00e9g\u00e8re pulv\u00e9rulence blanch\u00e2tre ; il m&rsquo;a tout de suite fait penser au genre am\u00e9ricain <a href=\"https:\/\/www.meslibellules.fr\/voyages\/bresil\/oligoclada-laetitia\/oligoclada-laetitia\/oligoclada-laetitia-male-1big.jpg\">Oligoclada<\/a> (ici Oligoclada laetitia au Br\u00e9sil).<\/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\/Chalybeothemis-fluviatilis-male-3.webp\"><img decoding=\"async\" width=\"1613\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-3.webp\" alt=\"Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025\" class=\"wp-image-25500 lazyload\" style=\"--smush-placeholder-width: 1613px; --smush-placeholder-aspect-ratio: 1613\/1204;width:562px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-3.webp 1613w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-3-768x573.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-3-1536x1147.webp 1536w\" data-sizes=\"(max-width: 1613px) 100vw, 1613px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025<\/figcaption><\/figure>\n\n\n\n<p>\u00c0 Born\u00e9o, et au Sarawak, il ne peut-\u00eatre confondu qu&rsquo;avec C. pruinosa (rare), tr\u00e8s pruineux, dont le labrum est jaune (noir ici), les pt\u00e9rostigmas brun fonc\u00e9 (clair ici) et les appendices anaux plus longs que le S9 (plus courts pour C. fluviatilis). Bien d&rsquo;autres diff\u00e9rences, en particulier au niveau de la nervation et des organes g\u00e9nitaux secondaires, sont list\u00e9s dans le document d\u00e9j\u00e0 cit\u00e9 (2).<\/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\/Chalybeothemis-fluviatilis-male-4.webp\"><img decoding=\"async\" width=\"1399\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-4.webp\" alt=\"Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025\" class=\"wp-image-25501 lazyload\" style=\"--smush-placeholder-width: 1399px; --smush-placeholder-aspect-ratio: 1399\/1204;width:555px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-4.webp 1399w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-4-768x661.webp 768w\" data-sizes=\"(max-width: 1399px) 100vw, 1399px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025<\/figcaption><\/figure>\n\n\n\n<p>Nous l&rsquo;avons rencontr\u00e9 sur <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/28-03-2025-Maludam-NP.webp\">une rivi\u00e8re du Parc National de Maludam<\/a>, parfois <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/29-03-2025-Maludan-N.P.webp\">simple canal entre les Pandanus<\/a> o\u00f9 il \u00e9tait abondant sur certaines zones ; malheureusement, j&rsquo;ai peu de photos correctes, car il est tr\u00e8s difficile et frustrant de faire des photos depuis une pirogue en mouvement. Les sp\u00e9cimens d\u00e9j\u00e0 collect\u00e9s au Sarawak en 2007  l&rsquo;avaient \u00e9t\u00e9 dans \u00ab\u00a0une petite lagune d&rsquo;eau noire, dans un marais ouvert, apparemment naturel, inhabituel au Sarawak, au sein d&rsquo;une vaste for\u00eat mar\u00e9cageuse secondaire.\u00a0\u00bb. Si l&rsquo;eau \u00e9tait bien noire et tourbeuse, nous \u00e9tions plut\u00f4t sur une rivi\u00e8re au niveau fluctuant au gr\u00e9 des mar\u00e9es de la Mer de Chine M\u00e9ridionale.<br>\u00c0 Singapour (3), on trouve Chalybeothemis fluviatilis \u00e0 la fois sur les berges v\u00e9g\u00e9talis\u00e9es de rivi\u00e8res, les mares ouvertes et les lacs, toujours \u00e0 proximit\u00e9 de la for\u00eat ; il est consid\u00e9r\u00e9 comme difficile \u00e0 approcher.<br><br>On le rencontre \u00e0 Born\u00e9o (Brunei, Kalimantan et Sarawak), \u00e0 Sumatra, \u00e0 Singapour, en Malaisie P\u00e9ninsulaire dans le sud de la Tha\u00eflande et l&rsquo;extr\u00eame sud de Cambodge.<br><a href=\"https:\/\/www.iucnredlist.org\/species\/165541\/122447819#geographic-range\">IUCN Red List<\/a>.<\/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\/Chalybeothemis-fluviatilis-male-2-scaled.webp\"><img decoding=\"async\" width=\"2560\" height=\"1390\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-2-scaled.webp\" alt=\"Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025\" class=\"wp-image-25499 lazyload\" style=\"--smush-placeholder-width: 2560px; --smush-placeholder-aspect-ratio: 2560\/1390;width:558px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-2-scaled.webp 2560w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-2-768x417.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-2-1536x834.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Chalybeothemis-fluviatilis-male-2-2048x1112.webp 2048w\" data-sizes=\"(max-width: 2560px) 100vw, 2560px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Chalybeothemis fluviatilis m\u00e2le, Born\u00e9o, Taman Negara Maludam, 28\/03\/2025<\/figcaption><\/figure>\n\n\n\n<p><strong>\u00c9tymologie<\/strong><br><strong>Chalybeothemis<\/strong>, du latin <em>chalybeius<\/em> (Gaffiot) qui signifie <em>d&rsquo;acier<\/em> et de <em>Themis<\/em>. Themis, est la d\u00e9esse grecque de l\u2019ordre et de la justice, qui a \u00e9t\u00e9 utilis\u00e9 de tr\u00e8s nombreuses fois pour cr\u00e9er des noms de Libellulidae. 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. Il est vraisemblable que ce soit la couleur m\u00e9tallique du thorax et de l&rsquo;abdomen qui ait inspir\u00e9 Lieftinck.<br><strong>Fluviatilis<\/strong>, du latin fluviatilis, pour<em> fluviale<\/em>, <em>des fleuves<\/em>, <em>des cours d&rsquo;eau<\/em>, certainement en rapport avec le lieu de capture, au Kalimantan, de l&rsquo;<em><a href=\"https:\/\/meslibellules.fr\/pagesweb\/divers\/glossaire.php\">holotype<\/a><\/em>. Je dois cependant pr\u00e9ciser que je n&rsquo;ai pas r\u00e9ussi \u00e0 acc\u00e9der \u00e0 la description de Lieftinck (1) et que je ne sais pas de quelle rivi\u00e8re il s&rsquo;agit.<br><br>\u00c0  Singapour et ailleurs, les anglophones le nomment Green-Eyed Percher.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>1- Lieftinck M.A., 1933 &#8211; A new genus and species of Libellulinae from western Borneo (Odonata). Sarawak Museum journal 4: 131-137, pis 13-15.<br>2- Dow, Choong &amp; Orr, 2007 &#8211; <a href=\"https:\/\/www.researchgate.net\/publication\/254242846_Two_new_species_of_Chalybeothemis_from_Malaysia_with_a_redefinition_of_the_genus_Odonata_Libellulidae#fullTextFileContent\">Two new species of Chalybeothemis from Malaysia, with a redefinition of the genus (Odonata: Libellulidae)<\/a> &#8211; International Journal of Odonatology 10 (2) 2007: 171-184<br>3- Robin Ngiam &amp; Marcus Ng &#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:28px\" 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-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-sarawak\/\">Accueil Sarawak<\/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\/pagesweb\/divers\/liste-generale-odonates-du-site\/asia-odonates.php\">Listes des Odonates d&rsquo;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\/pagesweb\/divers\/liste-generale-odonates-du-site\/all-odonates.php\">Listes continentales<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Ce n&rsquo;est qu&rsquo;en 2006 que Chalybeothemis fluviatilis (1) a \u00e9t\u00e9 d\u00e9couvert au Sarawak et en 2007 (mais d\u00e9j\u00e0 connu de Brunei et du Kalimantan) il a trouv\u00e9 deux autres compagnons (2) pour peupler son genre jusqu&rsquo;alors monotypique. C&rsquo;est un petit Libellulidae aux yeux verts, de 29 \u00e0 30 mm de longueur totale (3), dont le [&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":[38596,38606],"tags":[38599,38617],"class_list":["post-25502","post","type-post","status-publish","format-image","hentry","category-borneo-sarawak","category-libellulidae-borneo-sarawak","tag-borneo-sarawak","tag-libellulidae-borneo-2","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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