{"id":19009,"date":"2024-03-28T19:14:23","date_gmt":"2024-03-28T18:14:23","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?page_id=19009"},"modified":"2024-03-28T19:14:24","modified_gmt":"2024-03-28T18:14:24","slug":"ceriagrion-tenellum","status":"publish","type":"page","link":"https:\/\/www.meslibellules.fr\/blog\/ceriagrion-tenellum\/","title":{"rendered":"Ceriagrion tenellum (Villers, 1789)"},"content":{"rendered":"\n
\"Ceriagrion
Ceriagrion tenellum m\u00e2le , Saint R\u00e9my en Mauges (F-49), 08\/07\/2012<\/figcaption><\/figure>\n\n\n\n

Le Ceriagrion tenellum (Coenagrionidae) est un odonate discret qui passe plus de temps dans la v\u00e9g\u00e9tation qu’en vol et est donc de ce fait assez difficile \u00e0 d\u00e9tecter.<\/p>\n\n\n\n

Description – Identification<\/span><\/h5>\n\n\n\n

Les m\u00e2les<\/strong> arborent des yeux rouges, l’abdomen et les pattes sont \u00e9galement rouges comme les pt\u00e9rostigmas, le thorax est cuivr\u00e9 ou bronz\u00e9 avec des parties inf\u00e9rieures moins m\u00e9tallis\u00e9es et plus claires.
Il est presque impossible de le confondre avec un autre odonate, en raison de sa petite taille, 25 \u00e0 35 mm et surtout de ses pattes rouges ; ce dernier d\u00e9tail permet \u00e0 coup s\u00fbr de le distinguer de Pyrrhosoma nymphula<\/a> (33 \u00e0 36 mm) dont les pattes sont noires.
Les femelles<\/strong> existent sous plusieurs formes, comme souvent pour les Coenagrionidae ; l’une est androchrome<\/a>, avec un abdomen compl\u00e8tement rouge (forme erythrogastrum<\/em>), les autres pr\u00e9sentent plus ou moins de noir sur l’abdomen (forme typica<\/em> et melanogastrum<\/em>). Mais elles ont toutes les pattes rouges<\/em>, ce qui les distingue des femelles P. nymphula qui pr\u00e9sentent, elles aussi, ces variations de coloration noire sur l’abdomen.<\/p>\n\n\n\n

\"Ceriagrion<\/a>
Ceriagrion tenellum femelle typica<\/em>, le Fuilet -(F-49), 01\/07\/2012<\/figcaption><\/figure>\n\n\n\n
Habitat et distribution g\u00e9ographique<\/span><\/h5>\n\n\n\n

Ils se plaisent sur les eaux dormantes ou tr\u00e8s faiblement courantes, acides ou calcaires, mais toujours bien entour\u00e9es de v\u00e9g\u00e9tation basse dans laquelle ils se plaisent \u00e0 bri\u00e8vement se d\u00e9placer. Dans le Maine-et-Loire, je ne les observe jamais qu’autour des \u00e9tangs forestiers, fr\u00e9quemment d’anciennes carri\u00e8res d’argile.
En France, il est beaucoup plus commun dans l’ouest et le sud-est, rare ou tr\u00e8s \u00e9parpill\u00e9 dans le nord-est.
Atlas Dynamique des Odonates de France<\/a>
Sa distribution mondiale est limit\u00e9e \u00e0 l’Europe du Sud-Ouest et au nord du Maroc, de l’Alg\u00e9rie et de la Tunisie. Largement pr\u00e9sent en Espagne, Portugal, Italie et France, il atteint les c\u00f4tes sud de l’Angleterre, la Belgique, la Hollande et le nord de l’Allemagne. Il atteint la Cr\u00e8te, mais sa pr\u00e9sence se limite aux zones c\u00f4ti\u00e8res de la Croatie \u00e0 la Gr\u00e8ce, d\u00e9sertant l’Europe Centrale.
IUCN Red List<\/a><\/p>\n\n\n\n

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

Si on le trouve dans le sud de son aire d’avril \u00e0 septembre, il est bien s\u00fbr plus tardif dans le nord. Il appara\u00eet nettement plus tard que P. nymphula.
Mes observations personnelles s’\u00e9tendent de mi-mai \u00e0 fin septembre, dans le Maine-et-Loire.<\/p>\n\n\n\n

\"Ceriagrion<\/a>
Ceriagrion tenellum femelle erythrogastrum<\/em>, le Fuilet (F-49), 23\/06\/2011<\/figcaption><\/figure>\n\n\n\n
Comportement \u2013 \u00c9cologie<\/span><\/h5>\n\n\n\n

L’accouplement peut durer plusieurs heures, le temps pour le m\u00e2le de repousser le sperme des partenaires pr\u00e9c\u00e9dents afin de favoriser sa propre descendance. La ponte se fait en couple dans les v\u00e9g\u00e9taux en surface, les \u0153ufs \u00e9closent en 3 \u00e0 4 semaines et la phase larvaire s’\u00e9tend sur une ou deux saisons, selon le climat.
On le voit peu voler, il s’\u00e9carte tr\u00e8s peu de son lieu de naissance et de reproduction.
<\/p>\n\n\n\n

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

Ceriagrion<\/strong>, du latin cerinus – cireux<\/em> (rappelle la coloration jaun\u00e2tre de la plupart des membres de la famille), et du grec Agrios – vivant dans les champs, sauvage.
Tenellum<\/strong>, du latin tenellus<\/em> – tendre<\/em>, d\u00e9licat<\/em> qui a \u00e9t\u00e9 litt\u00e9ralement traduit pour cr\u00e9er le nom commun.<\/p>\n\n\n\n

<\/div>\n\n\n\n
\n
M\u00e2le \u00e9mergent<\/a><\/div>\n\n\n\n
M\u00e2le<\/a><\/div>\n\n\n\n
Femelle \u00e9mergente<\/a><\/div>\n\n\n\n
Femelle<\/a><\/div>\n\n\n\n
Accouplement<\/a><\/div>\n\n\n\n
Repas<\/a><\/div>\n\n\n\n
Curiosit\u00e9s<\/a><\/div>\n\n\n\n
Aide \u00e0 l’identification<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Le Ceriagrion tenellum (Coenagrionidae) est un odonate discret qui passe plus de temps dans la v\u00e9g\u00e9tation qu’en vol et est donc de ce fait assez difficile \u00e0 d\u00e9tecter. Description – Identification Les m\u00e2les arborent des yeux rouges, l’abdomen et les pattes sont \u00e9galement rouges comme les pt\u00e9rostigmas, le thorax est cuivr\u00e9 ou bronz\u00e9 avec des […]<\/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-19009","page","type-page","status-publish","hentry"],"yoast_head":"\nCeriagrion tenellum - 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