{"id":1537,"date":"2018-11-23T17:53:54","date_gmt":"2018-11-23T16:53:54","guid":{"rendered":"http:\/\/www.meslibellules.fr\/blog\/?p=1537"},"modified":"2025-12-26T11:17:38","modified_gmt":"2025-12-26T10:17:38","slug":"paracercion-v-nigrum","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2018\/11\/23\/paracercion-v-nigrum\/","title":{"rendered":"Vietnam 2018 - Paracercion v-nigrum (Needham, 1930)"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum.jpg\"><img decoding=\"async\" width=\"1067\" height=\"760\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum.jpg\" alt=\"Paracercion V-nigrum m\u00e2le , Vietnam, Pia Oac, 05\/06\/2018\" class=\"wp-image-1533 lazyload\" style=\"--smush-placeholder-width: 1067px; --smush-placeholder-aspect-ratio: 1067\/760;width:622px;height:443px\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum.jpg 1067w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-768x547.jpg 768w\" data-sizes=\"(max-width: 1067px) 100vw, 1067px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Paracercion V-nigrum m\u00e2le , Vietnam, Pia Oac, 05\/06\/2018<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:14px\">Paracercion v-nigrum (Coenagrionidae) a d'abord fait partie des Coenagrion tant sa ressemblance avec ce genre est saisissante, et Needham l'a d'abord d\u00e9crit comme Coenagrion v-nigrum. Pour une fois, l'\u00e9tymologie du nom scientifique n'est pas trop difficile ; il porte un \"V\" noir sur le 8\u1d49 segment abdominal, on en aper\u00e7oit la branche de gauche sur la photo ci-dessus.<br> Il est ensuite pass\u00e9 avec Asahina dans le genre Cercion pour se poser finalement dans le genre Paracercion cr\u00e9\u00e9 pour plusieurs \"Cercion\" asiatiques par Weekers et Dumont (2004).<br><br>Tom Kompier a d\u00e9couvert cette nouvelle esp\u00e8ce pour le Vietnam en 2014 et son identification est rest\u00e9e difficile et douteuse car les sujets qu'il a trouv\u00e9s ne portaient pas ce \"V\" caract\u00e9ristique. Cependant, la r\u00e9partition du noir sur l'abdomen, les appendices anaux \u00e9tant conformes, les sujets ci-dessous sont aussi consid\u00e9r\u00e9s comme appartenant \u00e0 cette esp\u00e8ce.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-tandem.jpg\"><img decoding=\"async\" width=\"1548\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-tandem.jpg\" alt=\"Paracercion V-nigrum m\u00e2le , Vietnam, Pia Oac, 05\/06\/2018\" class=\"wp-image-1535 lazyload\" style=\"--smush-placeholder-width: 1548px; --smush-placeholder-aspect-ratio: 1548\/1204;width:586px;height:455px\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-tandem.jpg 1548w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-tandem-768x597.jpg 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-tandem-1200x933.jpg 1200w\" data-sizes=\"(max-width: 1548px) 100vw, 1548px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Paracercion V-nigrum m\u00e2le , Vietnam, Pia Oac, 05\/06\/2018<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:15px\">Maintenant que des sujets portant ce \"V\" ont \u00e9t\u00e9 d\u00e9couverts, l'identification ne fait plus de doute. Et elle n'est pas moins \u00e9tonnante car c'est une esp\u00e8ce plut\u00f4t du centre de la Chine (Hubei, Jiangxu, Shaanxi, Sichuan) et m\u00eame si elle est pr\u00e9sente au Guizhou elle n'est pas connue, pour l'instant, dans les 2 provinces qui jouxtent le Vietnam, le Guangxi et le Yunnan.<br><a href=\"https:\/\/www.iucnredlist.org\/species\/168089\/6443872\">IUCN Red List<\/a>.<br><br>Needham, dans sa description originale, lui donne un abdomen de 21 mm, ce qui doit faire une longueur totale d'\u00e0 peine 27 mm. <br><br>Nous l'avons observ\u00e9 sur un \u00e9tang, seule rencontre du voyage, en compagnie de Pseudocopera ciliata, Ceriagrion azureum, Ceriagrion fallax, Pseudothemis zonata, Orthetrum melania, Orthetrum luzonicum et Ischnura carpentieri.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter is-resized\"><a href=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-2.jpg\"><img decoding=\"async\" width=\"1310\" height=\"1204\" data-src=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-2.jpg\" alt=\"Paracercion V-nigrum m\u00e2le , Vietnam, Pia Oac, 05\/06\/2018\" class=\"wp-image-1534 lazyload\" style=\"--smush-placeholder-width: 1310px; --smush-placeholder-aspect-ratio: 1310\/1204;width:569px;height:523px\" data-srcset=\"https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-2.jpg 1310w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-2-768x706.jpg 768w, https:\/\/www.meslibellules.fr\/blog\/wp-content\/uploads\/2018\/11\/paracercion-v-nigrum-2-1200x1103.jpg 1200w\" data-sizes=\"(max-width: 1310px) 100vw, 1310px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><figcaption class=\"wp-element-caption\">Paracercion V-nigrum m\u00e2le , Vietnam, Pia Oac, 05\/06\/2018<\/figcaption><\/figure>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u00c9tymologie<\/strong><br>Le genre\u00a0<strong>Paracercion<\/strong>\u00a0a \u00e9t\u00e9 cr\u00e9\u00e9 par Weekers et Dumont (2004) pour regrouper plusieurs esp\u00e8ces de demoiselles (Zygopt\u00e8res) d\u2019Asie de l\u2019Est qui \u00e9taient auparavant class\u00e9es dans les genres\u00a0<em>Cercion<\/em>,\u00a0<em>Coenagrion<\/em>\u00a0ou\u00a0<em>Enallagma<\/em>. Cette r\u00e9vision s\u2019est appuy\u00e9e \u00e0 la fois sur des donn\u00e9es mol\u00e9culaires et sur des caract\u00e8res morphologiques sp\u00e9cifiques. Le genre Cercion a disparu \u00e0 cette occasion.<br>Le genre Cercion, Navas (1907) vient du grec\u00a0<em>kerkos<\/em>\u00a0pour\u00a0<em>queue<\/em>\u00a0et du suffixe diminutif grec \u2013<em>ion<\/em>, classique en entomologie (Agrion, Coenagrion, Pseudagrion) ; l\u2019esp\u00e8ce type du genre Cercion \u00e9tait notre Erythromma lindenii, qui montre des appendices anaux remarquablement longs\u00a0<em>(longue queue<\/em>).<br>Weekers et Dumont ont ajout\u00e9 le pr\u00e9fixe\u00a0<em>para<\/em>, qui en grec signifie\u00a0<em>proche de<\/em>, pour signaler la proximit\u00e9 avec le genre Cercion.<br><strong>V-nigrum<\/strong>, du latin <em>niger<\/em> pour <em>noir<\/em>, l'origine du \"V\" a \u00e9t\u00e9 expliqu\u00e9e plus haut.<\/p>\n\n\n\n<div style=\"height:31px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Weekers et Dumont, 2004<\/strong>&nbsp;\u2013&nbsp;<a href=\"https:\/\/natuurtijdschriften.nl\/pub\/592469\/OJIOS2004033002005.pdf\">A molecular study of the relationship between the coenagrionid genera Erythromma and Cercion, with the creation of Paracercion gen. nov. for the East Asiatic \u2018Cercion\u2019 (Zygoptera : Coenagrionidae)<\/a>&nbsp;\u2013 Odonatologica 33 (2) :181-188.<\/p>\n\n\n\n<div style=\"height:30px\" 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\/odonates-du-vietnam-2012-2018\/\">Accueil Vietnam<\/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\/divers\/liste-generale-odonates-du-site\/asia-odonates.php\">Liste 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\/blog\/\">Accueil<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Paracercion v-nigrum (Coenagrionidae) a d'abord fait partie des Coenagrion tant sa ressemblance avec ce genre est saisissante, et Needham l'a d'abord d\u00e9crit comme Coenagrion v-nigrum. Pour une fois, l'\u00e9tymologie du nom scientifique n'est pas trop difficile ; il porte un \"V\" noir sur le 8\u1d49 segment abdominal, on en aper\u00e7oit la branche de gauche sur [&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":[20,54],"tags":[],"class_list":["post-1537","post","type-post","status-publish","format-image","hentry","category-coenagrionidae","category-vietnam","post_format-post-format-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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