{"id":17696,"date":"2024-01-04T19:27:15","date_gmt":"2024-01-04T18:27:15","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?page_id=17696"},"modified":"2025-12-27T07:52:39","modified_gmt":"2025-12-27T06:52:39","slug":"orthetrum-albistylum","status":"publish","type":"page","link":"https:\/\/www.meslibellules.fr\/blog\/orthetrum-albistylum\/","title":{"rendered":"Orthetrum albistylum (Selys, 1848)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-accueil-2.webp\"><img decoding=\"async\" width=\"2086\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-accueil-2.webp\" alt=\"Orthetrum albistylum m\u00e2le, Castelnau de Montmiral (F-81), 18\/07\/2019\" class=\"wp-image-17697 lazyload\" style=\"--smush-placeholder-width: 2086px; --smush-placeholder-aspect-ratio: 2086\/1204;width:606px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-accueil-2.webp 2086w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-accueil-2-768x443.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-accueil-2-1536x887.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-accueil-2-2048x1182.webp 2048w\" data-sizes=\"(max-width: 2086px) 100vw, 2086px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Orthetrum albistylum m\u00e2le, Castelnau de Montmiral (F-81), 18\/07\/2019<\/figcaption><\/figure>\n\n\n<h5><span style=\"text-decoration: underline;\">Description &#8211; Identification<\/span><\/h5>\n\n\n<p>Orthetrum albistylum, Libellulidae, est un de nos deux Orthetrum aux <span style=\"text-decoration: underline;\"><a href=\"https:\/\/meslibellules.fr\/pagesweb\/divers\/glossaire.php\">pt\u00e9rostigmas<\/a> <\/span>noirs, ce qui est un crit\u00e8re important, souvent n\u00e9glig\u00e9, pour le s\u00e9parer de O. brunneum et coerulescens.<br>Les yeux <strong>des m\u00e2les<\/strong> sont verts, la face claire ou blanche, le thorax brun largement \u00e9clair\u00e9 de deux (une seule bien visible) larges bandes verticales blanches ou cr\u00e8mes (pour les jeunes), l&rsquo;abdomen couvert d&rsquo;une pulv\u00e9rulence bleut\u00e9e, \u00e0 maturit\u00e9, les segments 7 \u00e0 10 noirs, les appendices anaux blancs (en principe).<br><em>Malheureusement<\/em>, en prenant de l&rsquo;\u00e2ge, le contraste des bandes thoraciques s&rsquo;att\u00e9nue, la face peut \u00eatre moins lumineuse, et, tromperie <em>honteuse<\/em>, les appendices peuvent <em>perdre leur blancheur<\/em> et \u00eatre m\u00eame <a href=\"http:\/\/www.meslibellules.fr\/pagesweb\/libellulidae\/orthetrum\/albistylum\/orthetrum-albistylum-male-2\/orthetrum-albistylum-male-5big.jpg\">totalement sombres<\/a>. On peut ainsi le confondre avec <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-cancellatum-male-.webp\">Orthetrum cancellatum<\/a>. <br>Ce dernier a une face<em> plus sale<\/em>, des yeux bleus-gris, pas de bande claire sur le thorax, et si son abdomen est \u00e9galement couvert d&rsquo;une pruinosit\u00e9 bleue, ses derniers segments sont variablement sombres, avec une limite mal d\u00e9finie entre bleu et noir et ils n&rsquo;arborent <span style=\"text-decoration: underline;\">jamais<\/span> des appendices anaux clairs.<br>Orthetrum albistylum appara\u00eet plus mince, plus \u00e9l\u00e9gant en vol, mais ce n&rsquo;est que le coup d&rsquo;\u0153il d&rsquo;un habitu\u00e9. Il mesure 45 \u00e0 50 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\/Orthetrum-albistylum-femelle-accueil-.webp\"><img decoding=\"async\" width=\"1756\" height=\"1117\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-accueil-.webp\" alt=\"Orthetrum albistylum femelle, Etang de P\u00e9ronne (F-49), 11\/07\/2011\" class=\"wp-image-17716 lazyload\" style=\"--smush-placeholder-width: 1756px; --smush-placeholder-aspect-ratio: 1756\/1117;width:527px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-accueil-.webp 1756w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-accueil--768x489.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-accueil--1536x977.webp 1536w\" data-sizes=\"(max-width: 1756px) 100vw, 1756px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Orthetrum albistylum femelle, Etang de P\u00e9ronne (F-49), 11\/07\/2011<\/figcaption><\/figure>\n\n\n\n<p>Les femelles, aux pt\u00e9rostigmas noirs, ne peuvent \u00eatre confondues qu&rsquo;avec <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-cancellatum-femelle.webp\">celles de O. cancellatum<\/a>, mais leur 10\u00b0 segment ainsi que leurs appendices anaux sont blancs ; attention, ceux de O. cancellatum ne le sont jamais, <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Epiprocte-femelle-Orthetrum-cancellatum.webp\">seul l&rsquo;\u00e9piprocte<\/a>, le c\u00f4ne terminal de l&rsquo;abdomen peut faire illusion.<br>Comme les m\u00e2les, elles portent deux bandes claires sur le thorax (une visible ici \u00e0 travers l&rsquo;aile), l&rsquo;abdomen, souvent moins jaune, porte \u00e9galement un <em>motif en \u00e9chelle, <\/em>mais dont les montants sont beaucoup plus arqu\u00e9s que ceux de la femelle O. r\u00e9ticul\u00e9.<br><br>Comme presque toujours chez les Libellulidae, les m\u00e2les immatures (ci-dessous le 07\/07\/2020 \u00e0 Capvern, dans les Hautes-Pyr\u00e9n\u00e9es) sont la copie des femelles, aux appendices anaux pr\u00e8s, bien s\u00fbr.<\/p>\n\n\n\n<h5><span style=\"text-decoration: underline;\">Habitat et distribution g\u00e9ographique<\/span><\/h5>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:51% auto\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-immature-accueil.webp\"><img decoding=\"async\" width=\"1435\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-immature-accueil.webp\" alt=\"\" class=\"wp-image-17717 size-full lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-immature-accueil.webp 1435w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-male-immature-accueil-768x644.webp 768w\" data-sizes=\"(max-width: 1435px) 100vw, 1435px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1435px; --smush-placeholder-aspect-ratio: 1435\/1204;\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<p>Il se reproduit sur tout type d&rsquo;eaux stagnantes, mais je l&rsquo;ai surtout rencontr\u00e9 sur des \u00e9tangs bien ouverts ; il accepterait des eaux tr\u00e8s faiblement courantes, surtout des mares r\u00e9siduelles laiss\u00e9es par des rivi\u00e8res.<br><br>En Europe de l&rsquo;Ouest, c&rsquo;est en France et au nord de l&rsquo;Italie qu&rsquo;il est le plus commun ; on disait il y a quelques ann\u00e9es qu&rsquo;il se limitait au sud de la Loire et s&rsquo;il y  est toujours plus abondant, il progresse rapidement vers le nord, profitant de pi\u00e8ces d&rsquo;eau artificialis\u00e9es telles des retenues d&rsquo;eau ou des piscicultures. Plus \u00e0 l&rsquo;est, il atteint au nord la Lituanie, au sud la Gr\u00e8ce. Il est de plus en plus dispers\u00e9 en Asie centrale, mais atteint la Chine et le Japon.<br><a href=\"https:\/\/atlas-odonates.insectes.org\/odonates-de-france\/orthetrum-albistylum\">IUCN Red List<\/a><\/p>\n<\/div><\/div>\n\n\n\n<p>Il est peu commun dans mon Maine-et-Loire, o\u00f9 le paysage est domin\u00e9 par Orthetrum cancellatum et c&rsquo;est toujours une surprise pour moi de voir de si nombreux O. albistylum dans le sud de la France.<\/p>\n\n\n\n<h5><span style=\"text-decoration: underline;\">P\u00e9riode de vol<\/span><\/h5>\n\n\n\n<p>Dans le Maine-et-Loire, on le rencontre de fin mai \u00e0 d\u00e9but septembre et il faut sans doute \u00e9tendre un peu ces limites en d\u00e9but et fin de mois dans le sud.<\/p>\n\n\n\n<h5><span style=\"text-decoration: underline;\">Comportement &#8211; \u00c9cologie<\/span><\/h5>\n\n\n\n<p>S&rsquo;il se pose parfois sur le sol, il est plus fr\u00e9quemment sur les rameaux et les herbes que son cousin O. cancellatum. <br>Il est territorial et agressif avec les autres odonates dont il ne d\u00e9daigne pas de faire son repas. Son vol est rapide et il se d\u00e9place le long des berges au ras de l&rsquo;eau pour trouver une partenaire faisant demi-tour quand il atteint les limites de son espace r\u00e9serv\u00e9.<br>On le dit pionnier sur les nouvelles pi\u00e8ces d&rsquo;eau, mais je ne l&rsquo;ai jamais vu sur la mare de mon jardin, car il pr\u00e9f\u00e8re les aires ouvertes.<br>Les accouplements que j&rsquo;ai pu observer se constituent en vol, alors que la femelle en ponte cherche surtout &#8230; \u00e0 s&rsquo;\u00e9chapper. Ils sont brefs, \u00e0 peine quelques minutes et la ponte s&rsquo;ensuit aussit\u00f4t, la femelle seule, frappant l&rsquo;eau de son abdomen pour larguer ses \u0153ufs.<br>La phase larvaire dure un an en g\u00e9n\u00e9ral.<\/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\/Orthetrum-albistylum-femelle-en-ponte-accueil.webp\"><img decoding=\"async\" width=\"2031\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-en-ponte-accueil.webp\" alt=\"Orthetrum albistylum femelle en ponte, Lugan (France-81),\" class=\"wp-image-17729 lazyload\" style=\"--smush-placeholder-width: 2031px; --smush-placeholder-aspect-ratio: 2031\/1204;width:565px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-en-ponte-accueil.webp 2031w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-en-ponte-accueil-768x455.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Orthetrum-albistylum-femelle-en-ponte-accueil-1536x911.webp 1536w\" data-sizes=\"(max-width: 2031px) 100vw, 2031px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Orthetrum albistylum femelle en ponte, Lugan (France-81), 07\/07\/2022. Noter les ondes cr\u00e9es par l&rsquo;impact de son abdomen.<\/figcaption><\/figure>\n\n\n\n<h5><span style=\"text-decoration: underline;\">\u00c9tymologie<\/span><\/h5>\n\n\n\n<p>Selys (1848) a bri\u00e8vement d\u00e9crit l&rsquo;esp\u00e8ce sous le nom de Libellula albistyla.<br><strong>Orthetrum<\/strong> vient de 2 mots grecs,\u00a0<em>orthos<\/em>\u00a0signifiant \u00ab\u00a0<em>droit<\/em>\u00a0\u00ab\u00a0et\u00a0<em>etron<\/em>\u00a0\u00a0\u00ab\u00a0<em>abdomen<\/em>\u00a0\u00a0\u00bb, ceci pour signifier que les c\u00f4t\u00e9s de l\u2019abdomen sont parall\u00e8les. Ce nom de genre cr\u00e9\u00e9 par Newman en 1833 a perdu sa pertinence avec la d\u00e9couverte de nouvelles esp\u00e8ces, mais le nom est rest\u00e9.<br><strong>Albistylum<\/strong> du latin <em>albus<\/em>, pour <em>blanc,<\/em> et de <em>stylus<\/em>, poin\u00e7on, <em>style<\/em>. Bien s\u00fbr, ce style ou stylet blanc correspond aux appendices anaux du m\u00e2le et lui valent son nom fran\u00e7ais d&rsquo;Orthetrum \u00e0 stylets blancs. Selys \u00e9crit : \u00ab\u00a0<em>Tr\u00e8s-voisine de la L. cancellata [Orthetrum cancellatum] dont elle diff\u00e8re surtout par les deux appendices anals sup\u00e9rieurs qui sont blanch\u00e2tres dans les deux sexes.<\/em>\u00ab\u00a0.<br><br>Les Anglo-Saxons ont repris cette singularit\u00e9 en le nommant White-tailed Skimmer. <\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Selys, 1848<\/strong> &#8211; <a href=\"https:\/\/www.biodiversitylibrary.org\/page\/2366591#page\/23\/mode\/1up\">Liste des Libellules d\u2019Europe et diagnose de quatre esp\u00e8ces nouvelles<\/a>.\u00a0<em>Revue zoologique<\/em>,\u00a0<em>11<\/em>, 15&#8211;19. P. 15.<\/p>\n\n\n\n<div style=\"height:49px\" 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\/pagesweb\/libellulidae\/orthetrum\/albistylum\/orthetrum-albistylum-male-immature.php\">M\u00e2le immature<\/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\/libellulidae\/orthetrum\/albistylum\/orthetrum-albistylum-male-1.php\">M\u00e2le<\/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\/2021\/01\/21\/orthetrum-albisylum-accident-demergence\/\">Incident d&rsquo;\u00e9mergence<\/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\/2021\/01\/26\/orthetrum-albistylum-femelle-emergente\/\">Femelle \u00e9mergente<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"http:\/\/meslibellules.fr\/pagesweb\/libellulidae\/orthetrum\/albistylum\/orthetrum-albistylum-femelle-1.php\">Femelle<\/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\/libellulidae\/orthetrum\/albistylum\/orthetrum-albistylum-accouplement.php\">Accouplement<\/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\/2020\/11\/14\/orthetrum-albistylum-predation-sur-pyropteron-chrysidiformis\/\">Pr\u00e9dation<\/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\/libellulidae\/orthetrum\/albistylum\/orthetrum-albistylum-curiosites.php\">Curiosit\u00e9s<\/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\/2021\/01\/23\/orthetrum-albistylum-loeil\/\">L&rsquo;\u0153il<\/a><\/div>\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Description &#8211; Identification Orthetrum albistylum, Libellulidae, est un de nos deux Orthetrum aux pt\u00e9rostigmas noirs, ce qui est un crit\u00e8re important, souvent n\u00e9glig\u00e9, pour le s\u00e9parer de O. brunneum et coerulescens.Les yeux des m\u00e2les sont verts, la face claire ou blanche, le thorax brun largement \u00e9clair\u00e9 de deux (une seule bien visible) larges bandes verticales [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","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":""},"class_list":["post-17696","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO 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