{"id":29217,"date":"2026-05-05T21:07:24","date_gmt":"2026-05-05T19:07:24","guid":{"rendered":"https:\/\/www.meslibellules.fr\/blog\/?p=29217"},"modified":"2026-05-05T21:34:18","modified_gmt":"2026-05-05T19:34:18","slug":"elattoneura-villiersi","status":"publish","type":"post","link":"https:\/\/www.meslibellules.fr\/blog\/2026\/05\/05\/elattoneura-villiersi\/","title":{"rendered":"Ghana – Elattoneura villiersi (Fraser, 1948)"},"content":{"rendered":"\n
\"Elattoneura<\/a>
Elattoneura villiersi m\u00e2le, Ghana, Ankasa Forest Reserve, 17\/01\/2026<\/figcaption><\/figure>\n\n\n\n

Elattoneura villiersi appartient aux Platycnemididae et fait partie d\u2019un genre que l\u2019on rencontre en Afrique pour une trentaine d\u2019esp\u00e8ces, et en Asie ; pour l\u2019instant, car ces esp\u00e8ces que j\u2019ai rencontr\u00e9es, par exemple \u00e0 Born\u00e9o, font tr\u00e8s certainement partie d\u2019un autre genre.
Nous avons photographi\u00e9 les quatre esp\u00e8ces connues au Ghana, mais Elattoneura villiersi montre des caract\u00e8res particuliers et uniques qui permettent de s’assurer facilement de son identification ; la face dorsale de son thorax est blanche portant une forme en ellipse de chaque c\u00f4t\u00e9 (son nom anglais est White-shouldered Threadtail), et les deux derniers segments sont couverts d’une pruine blanche.<\/p>\n\n\n\n

\n
\"Elattoneura<\/a><\/figure>\n\n\n\n
\"White-shouldered<\/a><\/figure>\n
Elattoneura villiersi m\u00e2le, Ghana, Kakum National Park, 13\/01\/2026<\/figcaption><\/figure>\n\n\n\n

Ils font partie de ces zygopt\u00e8res qui sont sensibles au pr\u00e9\u00e9clair du flash, que nous, humains, ne d\u00e9celons pas. Et les premi\u00e8res fois qu’on les photographient ils ont tendance \u00e0 s’envoler, pour, la plupart du temps, se reposer aussit\u00f4t. Ce qui donne parfois des s\u00e9ries de photos floues, en vol, beaucoup plus rarement nettes.<\/p>\n\n\n\n

\"Elattoneura<\/a>
Elattoneura villiersi m\u00e2le, Ghana, Ankasa Forest Reserve, 16\/01\/2026<\/figcaption><\/figure>\n\n\n\n

Selon Fraser, son abdomen mesure 33 mm, au total il mesure donc 38 mm.
Il vit sur les ruisseaux ombrag\u00e9s<\/a> par la for\u00eat et nous l’avons parfois rencontr\u00e9 dans des endroits vraiment sombres.<\/p>\n\n\n\n

\"Elattoneura<\/a>
Elattoneura villiersi m\u00e2le, Ghana, Kakum National Park, 13\/01\/2026<\/figcaption><\/figure>\n\n\n\n

Elattoneura villiersi pr\u00e9sente une distribution assez limit\u00e9e : Lib\u00e9ria, Guin\u00e9e, C\u00f4te d’Ivoire et Ghana.
IUCN Red List<\/a>.

Nous avons pu observer une ponte dans le lit de la rivi\u00e8re, sur un fond sableux, la femelle ins\u00e9rant ses oeufs dans les tiges des v\u00e9g\u00e9taux vivants. Ce sera aussi notre seule rencontre avec une femelle.<\/p>\n\n\n\n

\n
\"Elattoneura<\/a><\/figure>\n\n\n\n
\"Elattoneura<\/a><\/figure>\n
Elattoneura villiersi en ponte, Ghana, Ankasa Forest Reserve, 16\/01\/2026<\/figcaption><\/figure>\n\n\n\n
<\/div>\n\n\n\n

\u00c9tymologie<\/strong><\/strong><\/span> \u00a0<\/strong><\/strong>Elattoneura villiersi
Fraser a d\u00e9crit l’esp\u00e8ce dans le genre Prodasineura, Dijkstra et al. (2014) ont class\u00e9 les Prodasineura<\/em> africains dans les Elattoneura<\/em>.\u00a0
Il ne faut pas, comme moi, s’\u00e9tonner du titre de la publication de Fraser, car l’esp\u00e8ce est bien s\u00fbr absente d’\u00c9thiopie ; en 1948, on appelait r\u00e9gion \u00e9thiopienne toute l’Afrique subsaharienne, ainsi qu’une partie de la p\u00e9ninsule arabique et de Madagascar. On l’appelle maintenant la zone Afro-tropicale.

Elattoneura<\/strong>\u00a0du grec\u00a0ellaton<\/em>, pour\u00a0plus petit,<\/em>\u00a0et\u00a0neuron<\/em>\u00a0qui en entomologie est traduit par\u00a0nervure dans une aile<\/em>. Ceci en r\u00e9f\u00e9rence \u00e0 la longueur r\u00e9duite d\u2019une nervure qui fait r\u00e9f\u00e9rence dans la syst\u00e9matique des zygopt\u00e8res. Voir Suhling & Martens (2007).
Villiersi<\/strong> ; citons Fraser :\u00a0\u00bbcoll. A . Villiers, after whom this new species has been named in recognition of much valuable material placed at my disposal<\/em> \u00ab\u00a0. Andr\u00e9 Villiers (1915\u20131983) est un entomologiste fran\u00e7ais de grande renomm\u00e9e, sp\u00e9cialiste des Col\u00e9opt\u00e8res et des H\u00e9mipt\u00e8res et \u00e9tait en 1948 chef du d\u00e9partement de zoologie de l’IFAN<\/strong> (Institut Fran\u00e7ais d’Afrique Noire), bas\u00e9 \u00e0 Dakar, au S\u00e9n\u00e9gal. Il a r\u00e9guli\u00e8rement adress\u00e9 les odonates qu’il capturait \u00e0 Fraser qui lui a ainsi rendu hommage.<\/p>\n\n\n\n

\"White-shouldered<\/a>
Elattoneura villiersi m\u00e2le, Ghana, Kakum National Park, 13\/01\/2026<\/figcaption><\/figure>\n\n\n\n
<\/div>\n\n\n\n

Dijkstra, K.-D. B., Kalkman, V. J., Dow, R. A., Stokvis, F. R., & van Tol, J. (2014)<\/strong>\u00a0\u2013 Redefining the damselfly families: a full-lineage molecular phylogeny of Zygoptera (Odonata).\u00a0Systematic Entomology<\/em>,\u00a039<\/strong>(1), 68\u201396.
Fraser, 1948<\/strong> – Three new species of Ethiopian Odonates – Proceedings of the Royal Entomological Society of London (Series B), Vol. 17, P. 5-10.
Suhling & Martens, 2007<\/strong>\u00a0\u2013\u00a0Dragonflies and Damselflies of Namibia<\/a>, Gamsberg Macmillan.<\/p>\n","protected":false},"excerpt":{"rendered":"

Elattoneura villiersi appartient aux Platycnemididae et fait partie d\u2019un genre que l\u2019on rencontre en Afrique pour une trentaine d\u2019esp\u00e8ces, et en Asie ; pour l\u2019instant, car ces esp\u00e8ces que j\u2019ai rencontr\u00e9es, par exemple \u00e0 Born\u00e9o, font tr\u00e8s certainement partie d\u2019un autre genre.Nous avons photographi\u00e9 les quatre esp\u00e8ces connues au Ghana, mais Elattoneura villiersi montre des […]<\/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":[38663,38673],"tags":[38674],"class_list":["post-29217","post","type-post","status-publish","format-image","hentry","category-ghana","category-platycnemididae-ghana-2","tag-platycnemididae-ghana","post_format-post-format-image"],"yoast_head":"\nElattoneura villiersi - 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