{"id":27586,"date":"2025-12-28T09:47:50","date_gmt":"2025-12-28T08:47:50","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=27586"},"modified":"2025-12-28T09:47:52","modified_gmt":"2025-12-28T08:47:52","slug":"heliaeschna-crassa-idae","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2025\/12\/28\/heliaeschna-crassa-idae\/","title":{"rendered":"Born\u00e9o, Sarawak &#8211; Heliaeschna crassa Kr\u00fcger,1899 \/ Heliaeschna idae (Brauer, 1865)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-3.webp\"><img decoding=\"async\" width=\"2027\" height=\"1504\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-3.webp\" alt=\"Heliaeschna sp. femelle, Born\u00e9o, Kuching, 21\/03\/2025\" class=\"wp-image-27584 lazyload\" style=\"--smush-placeholder-width: 2027px; --smush-placeholder-aspect-ratio: 2027\/1504;aspect-ratio:1.3477737665463296;width:586px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-3.webp 2027w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-3-768x570.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-3-1536x1140.webp 1536w\" data-sizes=\"(max-width: 2027px) 100vw, 2027px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Heliaeschna sp. femelle, Born\u00e9o, Kuching, 21\/03\/2025<\/figcaption><\/figure>\n\n\n\n<p>Un membre de notre \u00e9quipe a trouv\u00e9 cette femelle morte,  Heliaeschna crassa ou Heliaeschna idae, sur le sol, \u00e0 l&rsquo;ext\u00e9rieur de notre h\u00f4tel dans la ville de Kuching. Les m\u00e2les de ces deux esp\u00e8ces ne sont pas faciles \u00e0 s\u00e9parer et leurs appendices anaux sont tr\u00e8s voisins, comme le montrent Tang &amp; al. 2010. Mais on ne sait pas s\u00e9parer les femelles, si tant est qu&rsquo;il s&rsquo;agisse bien de deux esp\u00e8ces diff\u00e9rentes&#8230;<br>Parmi les onze Heliaeschna d\u00e9crits dans le monde (Afrique et Asie), cinq sont pr\u00e9sents au Sarawak, et trois dans la r\u00e9gion de Kuching, mais H. simplicia femelle ne semble pas pr\u00e9senter ces bandes et taches ambr\u00e9es sur les ailes.<br>L&rsquo;appartenance au genre Heliaeschna a \u00e9t\u00e9 confirm\u00e9e par la pr\u00e9sence de quatre dents ou \u00e9pines sur la plaque ventrale dentig\u00e8re du dixi\u00e8me segment, comme on le constate ci-dessous. <\/p>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:28% auto\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" width=\"568\" height=\"575\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-4.webp\" alt=\"\" class=\"wp-image-27585 size-full lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 568px; --smush-placeholder-aspect-ratio: 568\/575;\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>L&rsquo;appartenance au genre Heliaeschna a \u00e9t\u00e9 confirm\u00e9e par la pr\u00e9sence de quatre dents ou \u00e9pines sur <a href=\"http:\/\/meslibellules.fr\/pagesweb\/divers\/glossaire.php\">la plaque dentig\u00e8re ventrale<\/a> du dixi\u00e8me segment comme on le constate ci-dessous et qui s\u00e9parent le genre des Gynacantha (2 \u00e9pines) o\u00f9 elles ont d&rsquo;abord \u00e9t\u00e9 class\u00e9es pour certaines (Heliaeschna idae, par exemple). Ces \u00e9pines interviennent peut-\u00eatre au moment de la ponte pour s&rsquo;accrocher dans le substrat, souvent du bois pourri.<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Les Heliaeschna sont des esp\u00e8ces essentiellement cr\u00e9pusculaires qui habitent les marais forestiers.<br>Ils sont de grande taille ; la femelle H. idae d\u00e9crite par Brauer (1866) atteint 78 mm, tandis que Tang &amp; al. (2010) mesurent H. crassa m\u00e2le \u00e0 72-77 mm.<\/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\/Heliaeschna-sp.-femelle-2-scaled.webp\"><img decoding=\"async\" width=\"2560\" height=\"1465\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-2-scaled.webp\" alt=\"Heliaeschna sp. femelle, Born\u00e9o, Kuching, 21\/03\/2025\" class=\"wp-image-27583 lazyload\" style=\"--smush-placeholder-width: 2560px; --smush-placeholder-aspect-ratio: 2560\/1465;aspect-ratio:1.7474795967354777;width:651px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-2-scaled.webp 2560w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-2-768x439.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-2-1536x879.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-2-2048x1172.webp 2048w\" data-sizes=\"(max-width: 2560px) 100vw, 2560px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Heliaeschna sp. femelle, Born\u00e9o, Kuching, 21\/03\/2025<\/figcaption><\/figure>\n\n\n\n<p>Les deux esp\u00e8ces sont pr\u00e9sentes \u00e0 Born\u00e9o, \u00e0 Sumatra et sur la p\u00e9ninsule Malaise, mais seule H. crassa atteindrait la Tha\u00eflande.<br>IUCN Red list :<a href=\"https:\/\/www.iucnredlist.org\/species\/163655\/5630932#geographic-range\"> Heliaeschna idae<\/a> &#8211; <a href=\"https:\/\/www.iucnredlist.org\/species\/171791\/176406827\">Heliaeschna crassa<\/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\/Heliaeschna-sp.-femelle-1.webp\"><img decoding=\"async\" width=\"1783\" height=\"1504\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-1.webp\" alt=\"Heliaeschna sp. femelle, Born\u00e9o, Kuching, 21\/03\/2025\" class=\"wp-image-27582 lazyload\" style=\"--smush-placeholder-width: 1783px; --smush-placeholder-aspect-ratio: 1783\/1504;aspect-ratio:1.1855229410088344;width:495px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-1.webp 1783w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-1-768x648.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Heliaeschna-sp.-femelle-1-1536x1296.webp 1536w\" data-sizes=\"(max-width: 1783px) 100vw, 1783px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Heliaeschna sp. femelle, Born\u00e9o, Kuching, 21\/03\/2025<\/figcaption><\/figure>\n\n\n\n<p><strong>\u00c9tymologie<\/strong><br><em><strong>Heliaeschna<\/strong><\/em> (Selys, 1882) combine le grec \u1f15\u03bb\u03b9\u03be , <em>helix<\/em> pour<em> vrille, enroulement<\/em> et le genre <em>Aeshna<\/em>, selon Fliedner (2020), qui reprend le texte de Selys : \u00ab\u00a0Le 10\u1d49 segment prolong\u00e9 en dessous en une plaque fourchue procombante, \u00e0 branches fines, longues, aigu\u00ebs, \u00e9cart\u00e9es\u00a0\u00bb.<br>M\u00eame si cette interpr\u00e9tation peut sembler incertaine, c&rsquo;est certainement la meilleure ; on peut \u00e9carter <em>helios<\/em>, <em>le soleil<\/em>, pour ces esp\u00e8ces dont Selys pouvait imaginer la tendance cr\u00e9pusculaire par leurs tr\u00e8s grands yeux, comme nos Aeschnidae europ\u00e9ens. <em>Helos<\/em> qui signifie <em>marais<\/em> en grec, est plus s\u00e9duisant, mais d&rsquo;une part, je doute que Selys ait connu l&rsquo;habitat r\u00e9el et pr\u00e9cis de l&rsquo;esp\u00e8ce qu&rsquo;il d\u00e9crivait, ensuite le passage de <em>helo<\/em> \u00e0 <em>heli<\/em> suppose une gymnastique euphonique sans doute exag\u00e9r\u00e9e.<br><br><strong>Crassa<\/strong>, du latin crassus, signifie <em>\u00e9pais, gros, robuste, massif<\/em>. Fliedner (2021) cite Kr\u00fcger qui \u00e9crit, comparant l&rsquo;esp\u00e8ce \u00e0 H. simplicia : \u00ab\u00a0<em>Der ganze K\u00f6rper ist massiger. Der Kopf ist gr\u00f6\u00dfer, 10 mm breit (simplicia 9 mm nach den hiesigen St\u00fccken)<\/em>\u00a0\u00bb soit \u00ab\u00a0<em>L\u2019ensemble du corps est plus massif. La t\u00eate est plus grande, 10 mm de large (9 mm pour simplicia d\u2019apr\u00e8s les exemplaires locaux)<\/em>.\u00a0\u00bb.<br><strong>Idae<\/strong>, Brauer (1886) pr\u00e9cise que la femelle qu&rsquo;il d\u00e9crit a \u00e9t\u00e9 captur\u00e9e par la c\u00e9l\u00e8bre exploratrice autrichienne Ida Pfeiffer \u00e0 Born\u00e9o.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li style=\"font-size:13px\"><em><strong>Brauer, 1866<\/strong>\u00a0 &#8211; <\/em><a href=\"https:\/\/www.biodiversitylibrary.org\/item\/136803#page\/1062\/mode\/1up\"><em>Reise der \u00f6sterreichischen Fregatte Novara um die Erde en den Jahren 1857, 1858, 1859<\/em><\/a>. P. 908.<\/li>\n\n\n\n<li style=\"font-size:13px\"><strong>Fliedne<\/strong>r <strong>Heinrich, 2020<\/strong> &#8211; <a href=\"https:\/\/www.researchgate.net\/profile\/Heinrich-Fliedner\/publication\/367150062_The_scientific_names_of_Ris'_odonate_taxa\/links\/63c2e3286fe15d6a571bc17a\/The-scientific-names-of-Ris-odonate-taxa.pdf\">The scientific names of Brauer&rsquo;s odonate taxa<\/a> &#8211; Journal of the International Dragonfly Fund \u2013 148<\/li>\n\n\n\n<li style=\"font-size:13px\"><strong>Fliedner Heinrich, 2021<\/strong> &#8211; <a href=\"https:\/\/www.researchgate.net\/publication\/372230745_IDF-Report_167_Kruger_2021\">The scientific names of Kr\u00fcger\u2019s odonate taxa with annotations about his contribution to neuropterological taxonomy<\/a> &#8211; IDF Report &#8211; 167.<\/li>\n\n\n\n<li style=\"font-size:13px\"><strong>Tang H. B., L. K. Wand and M. H\u00e4m\u00e4l\u00e4inen, 2010<\/strong> &#8211; A photographic guide to the dragonflies of Singapore. Raffles Museum of Biodiversity Research.<\/li>\n\n\n\n<li style=\"font-size:13px\"><strong>Selys, 1882<\/strong>. Sur la distribution des Insectes Odonates en Afrique. Association fran\u00e7aise pour l\u2019avancement des Sciences, Congr\u00e8s d\u2019Alger: Compte rendu de la 10\u1d49 session, Alger 1881: 663669.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:29px\" 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>Un membre de notre \u00e9quipe a trouv\u00e9 cette femelle morte, Heliaeschna crassa ou Heliaeschna idae, sur le sol, \u00e0 l&rsquo;ext\u00e9rieur de notre h\u00f4tel dans la ville de Kuching. Les m\u00e2les de ces deux esp\u00e8ces ne sont pas faciles \u00e0 s\u00e9parer et leurs appendices anaux sont tr\u00e8s voisins, comme le montrent Tang &amp; al. 2010. Mais [&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":[38627,38596],"tags":[38599],"class_list":["post-27586","post","type-post","status-publish","format-image","hentry","category-aeshnidae-borneo-sarawak","category-borneo-sarawak","tag-borneo-sarawak","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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