{"id":24951,"date":"2025-05-31T17:54:56","date_gmt":"2025-05-31T15:54:56","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?page_id=24951"},"modified":"2025-05-31T21:15:49","modified_gmt":"2025-05-31T19:15:49","slug":"leucorrhinia-pectoralis","status":"publish","type":"page","link":"https:\/\/www.meslibellules.fr\/blog\/leucorrhinia-pectoralis\/","title":{"rendered":"Leucorrhinia pectoralis (Charpentier, 1825)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Leucorrhinia pectoralis (1), la Leucorrhine \u00e0 gros thorax, est un petit Libellulidae de 35 mm, rare en France, figurant sur la liste rouge nationale comme quasi menac\u00e9e.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/pagesweb\/libellulidae\/leucorrhinia\/pectoralis\/leucorrhinia-pectoralis-accueil\/leucorrhinia-pectoralis-male-1big.jpg\"><img decoding=\"async\" width=\"1436\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/leucorrhinia-pectoralis-male-1big.jpg\" alt=\"Leucorrhinia pectoralis jeune m\u00e2le mature, R\u00e9serve du Pinail, 02\/06\/2013\" class=\"wp-image-24985 lazyload\" style=\"--smush-placeholder-width: 1436px; --smush-placeholder-aspect-ratio: 1436\/1204;width:517px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/leucorrhinia-pectoralis-male-1big.jpg 1436w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/leucorrhinia-pectoralis-male-1big-768x644.jpg 768w\" data-sizes=\"(max-width: 1436px) 100vw, 1436px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Leucorrhinia pectoralis jeune m\u00e2le mature, R\u00e9serve du Pinail, 02\/06\/2013<\/figcaption><\/figure>\n\n\n\n<h5><span style=\"text-decoration: underline;\">Description &#8211; Identification<\/span><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Les m\u00e2les<\/strong> : comme toutes les Leucorrhines leur face est blanche, les yeux rouges ou marron, le thorax est sombre et porte des marques jaunes puis rouges qui s&rsquo;att\u00e9nuent avec l&rsquo;\u00e2ge, l&rsquo;abdomen est sombre avec des marques jaunes qui s&rsquo;assombrissent en maturant, mais celles sur le S7 reste toujours jaune citron et tranche sur l&rsquo;abdomen ternissant. Les pt\u00e9rostigmas sont noirs, mais comme pour tous les Leucorrhinia europ\u00e9ens, les veines qui le suivent sont blanchies, les veines costales sont claires sur une vue ant\u00e9rieure.<br>On ne peut le confondre qu&rsquo;avec une autre Leucorrhine, mais L. rubicunda, rarissime en France (sauf l&rsquo;extr\u00eame nord), montre des pt\u00e9rostigmas rouges, L. dubia beaucoup plus commune (!) pr\u00e9sente un abdomen plus fin et la marque sur S7 est plus sombre et orang\u00e9e.<br><br><strong>Les femelles<\/strong> se distinguent des m\u00e2les par leur abdomen massif dont les taches jaunes restent bien visibles lors de la maturation, surtout celle du S7. <br>En France, on peut la confondre avec L. rubicunda, il faut alors examiner les lames vulvaires, mais cette derni\u00e8re n&rsquo;est pr\u00e9sente que dans l&rsquo;extr\u00eame nord du pays.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/pagesweb\/libellulidae\/leucorrhinia\/pectoralis\/leucorrhinia-pectoralis-femelle-1\/leucorrhinia-pectoralis-femelle-1big.jpg\"><img decoding=\"async\" width=\"1485\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/leucorrhinia-pectoralis-femelle-1big.jpg\" alt=\"Leucorrhinia pectoralis femelle, R\u00e9serve du Pinail, 17\/05\/2015\" class=\"wp-image-24984 lazyload\" style=\"--smush-placeholder-width: 1485px; --smush-placeholder-aspect-ratio: 1485\/1204;width:496px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/leucorrhinia-pectoralis-femelle-1big.jpg 1485w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/leucorrhinia-pectoralis-femelle-1big-768x623.jpg 768w\" data-sizes=\"(max-width: 1485px) 100vw, 1485px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Leucorrhinia pectoralis femelle, R\u00e9serve du Pinail, 17\/05\/2015<\/figcaption><\/figure>\n\n\n\n<h5><span style=\"text-decoration: underline;\">Habitat et distribution g\u00e9ographique<\/span><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">La pr\u00e9sence de poissons limite la pr\u00e9sence de Leucorrhinia pectoralis, sauf si des herbiers suffisamment denses sont \u00e0 disposition. On la trouve plus facilement sur les eaux stagnantes, la bordure des marais, les rives des lacs, les \u00e9tangs forestiers, les mares, mais \u00e9galement sur les bras morts et les rivi\u00e8res \u00e0 courant lent. Elle appr\u00e9cierait aussi les eaux qui se r\u00e9chauffent rapidement, comme les petites mares ; c&rsquo;est pr\u00e9cis\u00e9ment sur ce type de biotope que je l&rsquo;ai observ\u00e9.<br><br>Elle est peu commune en France, mais peut \u00eatre abondante localement et sa distribution est \u00e9parpill\u00e9e ;la r\u00e9gion bordelaise, le Centre Val de Loire, le Jura et les Vosges et le nord ; pour avoir une id\u00e9e exacte de sa pr\u00e9sence,  il faut consulter L&rsquo;<a href=\"https:\/\/atlas-odonates.insectes.org\/odonates-de-france\/leucorrhinia-pectoralis\">Atlas Dynamique des Odonates de France<\/a>.<br>Sur le plan mondial, sa distribution est centr\u00e9e sur la Belgique, les Pays-Bas, l&rsquo;Allemagne, la Pologne et le sud de la Scandinavie et m\u00eame si elle atteint le sud-ouest de la Sib\u00e9rie, les populations sont extr\u00eamement isol\u00e9es plus on avance vers l&rsquo;est.<br><a href=\"https:\/\/www.iucnredlist.org\/species\/165486\/19167032#geographic-range\">IUCN Red List<\/a> (2013 !)<br>Les populations sont menac\u00e9es par l&rsquo;eutrophisation des milieux et si ce risque n&rsquo;est pas pr\u00e9sent dans la R\u00e9serve Naturelle du Pinail o\u00f9 je l&rsquo;ai observ\u00e9 plusieurs fois, il faut veiller \u00e0 conserver les milieux ouverts qui lui conviennent.<\/p>\n\n\n\n<h5><span style=\"text-decoration: underline;\">P\u00e9riode de vol<\/span><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">De fin avril \u00e0 fin ao\u00fbt, mais essentiellement en fin mai et juin.<\/p>\n\n\n\n<h5><span style=\"text-decoration: underline;\">Comportement \u2013 \u00c9cologie<\/span><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">On trouve les m\u00e2les Leucorrhinia pectoralis perch\u00e9s sur la v\u00e9g\u00e9tation au-dessus de l&rsquo;eau, ils peuvent partir en exploration quelques minutes, mais sont fid\u00e8les \u00e0 leur perchoir. Les femelles sont tr\u00e8s discr\u00e8tes et se rencontrent plus facilement \u00e0 distance de l&rsquo;eau. L&rsquo;esp\u00e8ce est sensible \u00e0 la m\u00e9t\u00e9o et se r\u00e9fugie dans les bois si le temps se g\u00e2te.<br>L&rsquo;accouplement se produit en vol, au-dessus de l&rsquo;eau, pour se terminer pos\u00e9 et durerait 15 \u00e0 25 minutes. En principe, le m\u00e2le accompagne la femelle \u00e0 la ponte : elle frappe l&rsquo;extr\u00e9mit\u00e9 de son abdomen dans l&rsquo;eau pour larguer ses \u0153ufs. Le m\u00e2le reste en vol stationnaire \u00e0 proximit\u00e9, mais s&rsquo;il part chasser d&rsquo;autres m\u00e2les, il ne revient plus&#8230; et la femelle est alors souvent saisie par un autre pr\u00e9tendant. Quand les femelles viennent pondre seules, elles cherchent des endroits abrit\u00e9s o\u00f9 les m\u00e2les ont moins de chance de les voir. On a observ\u00e9 des pontes \u00e0 la tomb\u00e9e de la nuit, sp\u00e9cialement par temps couvert (2).<br>Les \u0153ufs \u00e9closent six semaines plus tard, la phase larvaire dure deux ou trois ans.<br><br>On retrouve ces m\u00eames comportements pour L. dubia et L. rubicunda.<\/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\/Leucorrhinia-pectoralis-accouplement-scaled.webp\"><img decoding=\"async\" width=\"2560\" height=\"1398\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Leucorrhinia-pectoralis-accouplement-scaled.webp\" alt=\"Leucorrhinia pectoralis accouplement, R\u00e9serve du Pinail (France-86), 20\/05\/2025\" class=\"wp-image-24983 lazyload\" style=\"--smush-placeholder-width: 2560px; --smush-placeholder-aspect-ratio: 2560\/1398;width:607px;height:auto\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Leucorrhinia-pectoralis-accouplement-scaled.webp 2560w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Leucorrhinia-pectoralis-accouplement-768x419.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Leucorrhinia-pectoralis-accouplement-1536x839.webp 1536w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Leucorrhinia-pectoralis-accouplement-2048x1118.webp 2048w\" data-sizes=\"(max-width: 2560px) 100vw, 2560px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Leucorrhinia pectoralis accouplement, R\u00e9serve du Pinail (France-86), 20\/05\/2025<\/figcaption><\/figure>\n\n\n\n<h5><span style=\"text-decoration: underline;\">\u00c9tymologie<\/span><\/h5>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Leucorrhinia<\/strong> (Brittinger 1850), de <em>leukos<\/em> pour <em>blanc<\/em> et de <em>rhinios<\/em> qui signifie <em>nez<\/em>, \u00e9videmment en rapport avec la face et le front blanch\u00e2tre des sujets de ce genre.<br><strong>Pectoralis<\/strong>, terme latin signifiant \u00ab\u00a0<em>relatif \u00e0 la poitrine, au thorax<\/em>\u00a0\u00bb car Charpentier croyait ind\u00fbment que le thorax de cette esp\u00e8ce montrait des caract\u00e9ristiques qui permettaient de la diff\u00e9rencier des autres Leucorrhines. Bien s\u00fbr, son nom fran\u00e7ais est issu de cette erreur d&rsquo;appr\u00e9ciation, Leucorrhine \u00e0 gros thorax. <\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">1- Charpentier, Toussaint von. (1840).\u00a0<em><a href=\"https:\/\/www.biodiversitylibrary.org\/item\/285752#page\/86\/mode\/1up\">Libellulinae europaeae descriptae ac depictae<\/a><\/em>\u00a0(p. 85). Leopold Voss.<br>2- Bostjan Kiauta, 1964 &#8211; <a href=\"https:\/\/natuurtijdschriften.nl\/pub\/1014245\/EB1964024005002.pdf\">Notes on some field observations on the behaviour of Leucorrhinia pectoralis Charp. (Odonata: Libellulidae)<\/a> &#8211; ENTOMOLOGISCHE BERICHTEN, DEEL 24, 1.V.1964<br><br>Documents consult\u00e9s :<br>&#8211; Daniel Grand et Jean-Pierre Boudot, Les Libellules de France, Belgique et Luxembourg, collection Parth\u00e9nope, 2006<br>&#8211; Guide des Libellules de France et d\u2019Europe, K. -D.B. Dijkstra &amp; R. Lewington, Delachaux et Niestl\u00e9, 2007<br>&#8211; Paul Andr\u00e9 Robert, Les Libellules, Delachaux et Niestl\u00e9, 1958<br>&#8211; <a href=\"https:\/\/www.researchgate.net\/publication\/291165298_Atlas_of_the_European_dragonflies_and_damselflies\">Atlas of the European dragonflies and damselfies<\/a>, Jean-Pierre Boudot &amp; Vincent J. Kalkman, KNNV Publishing, 2015<br>&#8211; Europe\u2019s Dragonflies, A Field Guide to damselflies and dragonflies, Dave Smallshire &amp; Andy Swash, British Dragonfly Society, 2020<br>&#8211; R. R. Askew, 2004 \u2013 The Dragonflies of Europa \u2013 Harley Books<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Leucorrhinia pectoralis (1), la Leucorrhine \u00e0 gros thorax, est un petit Libellulidae de 35 mm, rare en France, figurant sur la liste rouge nationale comme quasi menac\u00e9e. Description &#8211; Identification Les m\u00e2les : comme toutes les Leucorrhines leur face est blanche, les yeux rouges ou marron, le thorax est sombre et porte des marques jaunes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","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-24951","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - 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