{"id":8426,"date":"2014-06-25T16:40:00","date_gmt":"2014-06-25T16:40:00","guid":{"rendered":"https:\/\/deliry.com\/?p=8426"},"modified":"2026-06-15T16:32:24","modified_gmt":"2026-06-15T16:32:24","slug":"cordulegaster-bidentata-dans-la-loire","status":"publish","type":"post","link":"https:\/\/deliry.com\/?p=8426","title":{"rendered":"Cordulegaster bidentata<\/i> dans la Loire"},"content":{"rendered":"\n

Archives – 25 juin 2014 – E.Schloesing<\/p>\n\n\n\n

Cette ann\u00e9e 2014 est la premi\u00e8re pour la d\u00e9couverte de la reproduction de Cordulegaster bidentata<\/em> dans le d\u00e9partement de la Loire. Des larves ont \u00e9t\u00e9 observ\u00e9es sur plus de dix localit\u00e9s d\u00e9j\u00e0 cette ann\u00e9es 2014 alors qu\u2019aucune n\u2019avait \u00e9t\u00e9 contact\u00e9e sur le d\u00e9partement auparavant, ni m\u00eame un exuvie.<\/p>\n\n\n\n

Elodie Schloesing d\u00e9couvre et illustre sa d\u00e9couverte sur St Priest la Prugne le 19 juin 2014.<\/p>\n\n\n\n

Le milieu o\u00f9 se plait Cordulegaster bidentata<\/em> est typique des cours d\u2019eau de t\u00eate de bassin. Ici, de nombreuses zones de sources rejoignent le ruisseau principal qui chemine entre les sapins, les h\u00eatres et autres feuillus.<\/p>\n\n\n\n

C\u2019est sur ce m\u00eame ruisseau, pr\u00e8s d\u2019un pont en bordure de clairi\u00e8re qu\u2019un individu a \u00e9merg\u00e9, laissant derri\u00e8re lui son exuvie. La larve est ainsi remont\u00e9e le long d\u2019un muret en pierre, plus d\u20191,50 m au-dessus de l\u2019eau, afin de s\u2019agripper \u00e0 quelques fr\u00eales tiges de gramin\u00e9es !<\/p>\n\n\n

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Lieu de la d\u00e9couverte \u00a9 E.Schloesing<\/figcaption><\/figure>\n<\/div>\n\n\n

Les Cordulegaster bidentata <\/em>se m\u00ealent ici aux Cordulegaster boltonii<\/em>. La distinction entre les exuvies des deux esp\u00e8ces r\u00e9side principalement dans la pr\u00e9sence d\u2019\u00e9pines lat\u00e9rales sur les segments S9 et S8 pour Cordulegaster boltonii<\/em>, et leur absence pour bidentata<\/em>.<\/p>\n\n\n

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Absence et pr\u00e9sence d\u2019\u00e9pines lat\u00e9rales \u00a9 E.Schloesing<\/figcaption><\/figure>\n<\/div>\n\n\n

Une fois \u00e9merg\u00e9s, les adultes utilisent les clairi\u00e8res et les prairies d\u00e9laiss\u00e9es comme zone de chasse.<\/p>\n\n\n

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C\u2019est une indication mais visible ici, les fourreaux alaires sont parall\u00e8les ou divergents
\u00a9 E.Schloesing<\/figcaption><\/figure>\n<\/div>\n\n
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L\u2019un est un m\u00e2le, le second une femelle \u00a9 E.Schloesing<\/figcaption><\/figure>\n<\/div>\n\n
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Ici, un m\u00e2le de Cordulegaster bidentata<\/em> se repose appendu \u00e0 une tige d\u2019Ombellif\u00e8re
\u00a9 E.Schloesing<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"

Archives – 25 juin 2014 – E.Schloesing Cette ann\u00e9e 2014 est la premi\u00e8re pour la d\u00e9couverte de la reproduction de Cordulegaster bidentata dans le d\u00e9partement de la Loire. Des larves ont \u00e9t\u00e9 observ\u00e9es sur plus de dix … <\/p>\n","protected":false},"author":1,"featured_media":8434,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[517,518,1,269],"tags":[],"class_list":["post-8426","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cordulegastridae-cordulegastridae","category-loire","category-maintenance","category-odonates"],"_links":{"self":[{"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts\/8426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8426"}],"version-history":[{"count":5,"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts\/8426\/revisions"}],"predecessor-version":[{"id":8442,"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts\/8426\/revisions\/8442"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/media\/8434"}],"wp:attachment":[{"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}