{"id":29348,"date":"2026-05-17T13:02:27","date_gmt":"2026-05-17T11:02:27","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=29348"},"modified":"2026-05-17T13:03:40","modified_gmt":"2026-05-17T11:03:40","slug":"coenagrion-puella-ou-pulchellum","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2026\/05\/17\/coenagrion-puella-ou-pulchellum\/","title":{"rendered":"Coenagrion puella ou pulchellum ?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Au d\u00e9tour d'une identification sur iNaturalist, j'ai appris par hasard que depuis 2011 nos amis hollandais, tr\u00e8s actifs en odonatologie, utilisaient un \"crit\u00e8re\" de coloration quand le pronotum n'\u00e9tait pas visible correctement pour d\u00e9terminer les femelles Coenagrion puella ou Coenagrion pulchellum.<br>C'est une vraie surprise que de d\u00e9couvrir que ces astuces de passionn\u00e9s ne franchissent pas les fronti\u00e8res et qu'il nous a fallu quinze ans pour y acc\u00e9der.<br><br><a href=\"https:\/\/www.inaturalist.org\/people\/es_faz\" target=\"_blank\" rel=\"noreferrer noopener\">es_faz<\/a> sur iNaturalist, ou <a href=\"https:\/\/www.facebook.com\/macromia.puntnl\" target=\"_blank\" rel=\"noreferrer noopener\">Faz Enes<\/a> sur Facebook, auteur du site <a href=\"https:\/\/www.macromia.nl\/\" target=\"_blank\" rel=\"noreferrer noopener\">Macromia.nl<\/a>, nous r\u00e9v\u00e8le au hasard d'une identification, ce 16 mai 2026, que Weia Reinboud, coautrice de \"<strong><a href=\"https:\/\/cdn.webshopapp.com\/shops\/39297\/files\/329419874\/veldgids-libellen.jpg\">Veldgids Libellen<\/a><\/strong>\" (<em>Guide de terrain des libellules<\/em> (Europe du Nord et Centrale)), a post\u00e9 un collage de puella vs pulchellum sur le forum <a href=\"https:\/\/forum.waarneming.nl\/index.php\/topic,141600.30.html\" target=\"_blank\" rel=\"noreferrer noopener\">Waarneming.nl<\/a>, qui met en \u00e9vidence un nouveau \"crit\u00e8re\" ; le mot est sans doute un peu fort mais ce d\u00e9tail est bien utile. D'ailleurs, ce \"crit\u00e8re\" fonctionne aussi pour les m\u00e2les, mais on a le plus souvent d'autres solutions pour les s\u00e9parer.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Coenagrion-pulchellum-vs-puella-1.webp\"><img decoding=\"async\" width=\"1808\" height=\"847\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Coenagrion-pulchellum-vs-puella-1.webp\" alt=\"Femelle Coenagrion pulchellum vs puella\" class=\"wp-image-29352 lazyload\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Coenagrion-pulchellum-vs-puella-1.webp 1808w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Coenagrion-pulchellum-vs-puella-1-768x360.webp 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Coenagrion-pulchellum-vs-puella-1-1536x720.webp 1536w\" data-sizes=\"(max-width: 1808px) 100vw, 1808px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1808px; --smush-placeholder-aspect-ratio: 1808\/847;\" \/><\/a><figcaption class=\"wp-element-caption\">Femelle Coenagrion pulchellum vs Coenagrion puella<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Il s'agit donc d'une expansion plut\u00f4t rectangulaire<\/strong> qui s'\u00e9chappe vers le bas de la partie ant\u00e9rieure de la bande sombre couvrant la suture hum\u00e9rale, juste en arri\u00e8re de l'infra\u00e9pisterne m\u00e9sothoracique (voir ce <a href=\"https:\/\/www.meslibellules.fr\/thematique\/anat\/schemanat\/robert7\/planche7-big.jpg\">dessin <\/a>de Robert (1958) qui pr\u00e9cise les termes anatomiques). Pour Coenagrion pulchellum, cette <strong>expansion est prononc\u00e9e<\/strong>, pas seulement sous forme d'un trait ou deux, ou d'une petite bosse arrondie.<br>Elle est toujours <strong>nettement plus faible ou m\u00eame absente<\/strong> pour Coenagrion puella, comme <a href=\"https:\/\/www.meslibellules.fr\/images\/coenagrionidae\/coenagrion\/puella_femelle1\/femelle-big.jpg\">ici<\/a>, ou <a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/Coenagrion-puella-accueil-femelle-verte-1.webp\">l\u00e0<\/a>.<br><br>Bien s\u00fbr cette expansion est pr\u00e9sente pour d'autres esp\u00e8ces de Coenagrion comme ornatum, armatum, hylas, johansonni, mais il est rare de devoir les s\u00e9parer de C. puella ou pulchellum.<br><br>Il est \u00e0 noter que C. mercuriale ne semble jamais pr\u00e9senter cette expansion et qu'elle s'av\u00e8re (si pr\u00e9sente sur le sujet C. puella examin\u00e9) comme un moyen d\u00e9tourn\u00e9 de s\u00e9parer les deux esp\u00e8ces, quand le pronotum n'est pas visible.<\/p>\n\n\n\n<div style=\"height:67px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Paul-Andr\u00e9 Robert, 1958<\/strong> - Les Libellules, Delachaux et Niestl\u00e9.<\/p>\n\n\n\n<div style=\"height:31px\" 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-2c90304e 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\/wp-content\/uploads\/ceriagrion-tenellum-femelle-6.webp\">Accueil Coenagrion pulchellum<\/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\/coenagrion-puella\/\">Accueil Coenagrion puella<\/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>Au d\u00e9tour d'une identification sur iNaturalist, j'ai appris par hasard que depuis 2011 nos amis hollandais, tr\u00e8s actifs en odonatologie, utilisaient un \"crit\u00e8re\" de coloration quand le pronotum n'\u00e9tait pas visible correctement pour d\u00e9terminer les femelles Coenagrion puella ou Coenagrion pulchellum.C'est une vraie surprise que de d\u00e9couvrir que ces astuces de passionn\u00e9s ne franchissent pas [&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":[343,457,60,55],"tags":[],"class_list":["post-29348","post","type-post","status-publish","format-image","hentry","category-coenagrion-mercuriale","category-coenagrion-puella","category-coenagrionidae-france","category-france","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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