{"id":15291,"date":"2023-08-02T19:19:47","date_gmt":"2023-08-02T17:19:47","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?page_id=15291"},"modified":"2023-08-02T19:24:01","modified_gmt":"2023-08-02T17:24:01","slug":"coenagrion-pulchellum","status":"publish","type":"page","link":"https:\/\/www.meslibellules.fr\/blog\/coenagrion-pulchellum\/","title":{"rendered":"Coenagrion pulchellum (Vander Linden, 1825)"},"content":{"rendered":"\n
\"Coenagrion<\/a>
Coenagrion puchellum m\u00e2le, Etang de Joreau (F-\/4\/9), 17\/06\/2012<\/figcaption><\/figure>\n\n\n\n
Description – Identification<\/span><\/h5>\n\n\n\n

Coenagrion pulchellum est beaucoup moins commun que son presque sosie, C. puella<\/a>. Il est l\u00e9g\u00e8rement plus grand et atteint 34 \u00e0 38 mm.
Si les m\u00e2les<\/strong> montrent tous les 2 des motifs noirs sur fond bleu, Coenagrion pulchellum est plus sombre, en particulier sur le thorax, o\u00f9 la bande ant\u00e9hum\u00e9rale bleue<\/a> est souvent \u00e9trangl\u00e9e ou m\u00eame r\u00e9duite \u00e0 un point d’exclamation<\/em>. Sur l’abdomen, il porte des anneaux noirs plus larges que son cousin et qui se prolongent lat\u00e9ralement en avant avec la m\u00eame fine ligne noire.
Le pronotum<\/a> est trilob\u00e9 avec une marge post\u00e9rieure en \u00ab\u00a0W \u00e0 l’envers.
Le S2 montre une t\u00eate de chat fa\u00e7on<\/em><\/a> Batman<\/em>, plus grossier que le \u00ab\u00a0U\u00a0\u00bb de son cousin, mais comme tout le reste des motifs, il est tr\u00e8s<\/em> variable.
Le S8 porte un dessin noir complet en forme de mitre<\/em><\/a> et non 2 points<\/em> ou traits lat\u00e9raux comme C. puella.
Les femelles<\/strong> existent sous plusieurs formes, souvent vertes \u00e0 abdomen bleu orn\u00e9 de tridents noirs, parfois l’abdomen est tr\u00e8s sombre au-dessus et vert en dessous (comme C. puella), parfois montrant un thorax p\u00e2le. Elles ont normalement des bandes ant\u00e9hum\u00e9rales compl\u00e8tes et l’identification ne peut se faire valablement qu’en examinant le pronotum<\/a> qui est \u00e9galement trilob\u00e9 avec une marge post\u00e9rieure en\u00a0\u00bb W\u00a0\u00bb invers\u00e9.<\/p>\n\n\n\n

\"Coenagrion<\/a>
Coenagrion pulchellum femelle, Etang de Joreau (F-49), 12\/05\/2013<\/figcaption><\/figure>\n\n\n\n
Habitat et distribution g\u00e9ographique<\/span><\/h5>\n\n\n\n

L’Agrion joli<\/em> se trouve sur toutes sortes d’eaux stagnantes bien ensoleill\u00e9es, mares, \u00e9tangs, lacs, foss\u00e9s, canaux, pourvus qu’ils soient bien garnis d’herbiers aquatiques, \u00e9ventuellement en for\u00eat, ou en tout cas avec une v\u00e9g\u00e9tation rivulaire suffisante. Il est rarement pr\u00e9sent sur les eaux courantes tr\u00e8s lentes.

En France, il est pr\u00e9sent (mais assez rare), \u00e0 peu pr\u00e8s dans tous les d\u00e9partements, sauf dans l’est de et le sud de la Nouvelle-Aquitaine, l’Occitanie et l’extr\u00eame sud-est.
Il est consid\u00e9r\u00e9 comme vuln\u00e9rable au niveau national.
Atlas dynamique des odonates<\/a>

Dans le reste du monde, son aire de pr\u00e9dilection est l’Europe centrale. Il atteint \u00e0 l’est l’Irlande et le sud de l’Angleterre. Au nord, on le trouve dans le sud de la Scandinavie. \u00c0 l’est, on le rencontre encore dans la partie Asie centrale de la f\u00e9d\u00e9ration de Russie, en Turquie. Au sud, il est tr\u00e8s rare au nord de l’Espagne, rare en Italie (sauf \u00e0 l’extr\u00eame sud (!)), mais encore pr\u00e9sent dans le P\u00e9loponn\u00e8se.
Sa population n’est pas globalement menac\u00e9e : IUCN Red List<\/a>.<\/p>\n\n\n\n

P\u00e9riode de vol<\/span><\/h5>\n\n\n\n

On le voit voler de d\u00e9but avril \u00e0 fin juillet dans le sud, de fin avril \u00e0 d\u00e9but septembre dans le nord. Mais il est beaucoup plus fr\u00e9quent en juin.<\/p>\n\n\n\n

Comportement – <\/span>\u00c9<\/span>cologie<\/span><\/h5>\n\n\n\n

C’est une esp\u00e8ce de plaine qui peut atteindre 1500 m d’altitude dans le sud.
L’accouplement dure 10 \u00e0 15 minutes et le couple part presque aussit\u00f4t pondre sur des d\u00e9bris v\u00e9g\u00e9taux, des tiges pendant de la rivre, des n\u00e9nuphars, de la menthe aquatique, des carex, mais toujours dans les parties mouill\u00e9es de ces plantes. Il lui arrive rarement de s’immerger totalement.
L’\u00e9closion intervient 2 \u00e0 6 semaines apr\u00e8s la ponte et la phase larvaire dure un an, deux si les conditions sont d\u00e9favorables. Elle compte 10 \u00e0 13 stades.<\/p>\n\n\n

\u00c9tymologie<\/span><\/h5>\n\n\n

Coenagrion est form\u00e9 des 2 mots grecs Koinos \u2013 commun<\/em> et Agrios \u2013 vivant dans les champs, sauvage<\/em>. Ce nom de genre a \u00e9t\u00e9 form\u00e9 de fa\u00e7on complexe lorsqu\u2019il a fallu rediviser les familles existantes, de nouvelles esp\u00e8ces \u00e9tant d\u00e9couvertes, le terme \u00ab agrion \u00bb s\u2019av\u00e9rant insuffisant.
Pulchellum, du latin –pulchellus<\/em>, qui signifie –joli<\/em>, ce que le nom vernaculaire fran\u00e7ais a tout simplement repris.

En le nommant Variable bluet, les anglo-saxons ont voulu insister sur la variabilit\u00e9 de ses dessins noirs, tant sur le thorax que l’abdomen. Bluet est utilis\u00e9 pour d\u00e9signer tous les Coenagrion et notre Enallagma, se r\u00e9f\u00e9rant \u00e9galement \u00e0 la couleur bleue.<\/p>\n\n\n\n

<\/div>\n\n\n\n
\n
M\u00e2le<\/a><\/div>\n\n\n\n
Femelle<\/a><\/div>\n\n\n\n
Accouplement<\/a><\/div>\n<\/div>\n\n\n\n
<\/div>\n\n\n\n
\n
Aide \u00e0 l’identification<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Description – Identification Coenagrion pulchellum est beaucoup moins commun que son presque sosie, C. puella. Il est l\u00e9g\u00e8rement plus grand et atteint 34 \u00e0 38 mm.Si les m\u00e2les montrent tous les 2 des motifs noirs sur fond bleu, Coenagrion pulchellum est plus sombre, en particulier sur le thorax, o\u00f9 la bande ant\u00e9hum\u00e9rale bleue est souvent […]<\/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":"default","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-15291","page","type-page","status-publish","hentry"],"yoast_head":"\nCoenagrion pulchellum - 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