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  1. Galleries
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  4. » Aeshna Cyanea

 
Aeshna Cyanea...

Odonati 2012-13

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Aeshna Cyanea sent on April 22, 2019 (19:08) by Raffaella Coreggioli. 10 comments, 430 views.

, 1/3 f/11.0, ISO 100, tripod.

Aeshna cyanea (Muller, 1764) Dimensioni: lunghezza: 70-75 mm, apertura alare 95-115 mm. Descrizione della specie: è una libellula della famiglia delle Aeshnidae (Rambur, 1842), sono una famiglia di insetti dell'ordine degli Odonata (infraordine Anisoptera). E' uno dei più grandi rappresentanti della famiglia, di questa famiglia fanno parte le libellule più robuste. Il maschio adulto presenta addome dai caratteristici disegni bruni, verdi e azzurri (punti verdi disposti a coppie in contrasto con la porzione, terminale e laterale dell'addome, blu-azzurra). La femmina, invece, è bruna con disegni, di color verde-acqua, simili a quelli del maschio. Il torace, in entrambi i sessi, è verde e, in visione laterale, presenta due ampie bande nere: una completa, l'altra interrotta a metà. Il margine posteriore degli occhi è scuro con due caratteristici punti gialli. I cerci del maschio, visti lateralmente, si ampliano nella metà apicale per poi restringersi a formare un "becco" verso il basso. Sempre nel maschio il "triangolo anale", sull'ala posteriore, è formato da 3-6 celle ma raramente 2 come nelle altre Aeshna. Il pterostigma è corto (circa 3 mm) e comunque due volte più lungo che largo. Appartiene alla famiglia la specie Tetracanthagyna plagiata, la libellula più grande al mondo Distribuzione e habitat: presente in tutta Italia, meno comune in Sicilia, Sardegna e Puglia. Frequenta diversi ambienti, anche urbani, prediligendo zone boscose, radure, stagni. Il volo di caccia è caratteristico: irregolare, radente con addome leggermente curvato verso il basso. I maschi sono territoriali. Periodo di attività: adulti presenti principalmente in luglio-agosto. Raramente si osserva questa libellula volare prima di luglio o in autunno inoltrato



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avatarsupporter
sent on April 22, 2019 (19:15) | This comment has been automatically translated (show/hide original)

Wonderful and thanks for the Info.

avatarsenior
sent on April 22, 2019 (19:48) | This comment has been automatically translated (show/hide original)

Wow a sharpness that looks three-dimensional, but how do you do? :-)
Hello

avatarsupporter
sent on April 22, 2019 (19:52) | This comment has been automatically translated (show/hide original)

QUOTAS Wonderful and thanks for the Info. /QUOTE
A thousand thanks Roby :-)
Gosh a sharpness that looks three-dimensional, but how do you do? /QUOTE
Merit of Light, thanks Massimo, always kind :-P
Good evening
Raffaella

avatarsenior
sent on April 22, 2019 (19:53) | This comment has been automatically translated (show/hide original)

Beautiful.
Congratulations.
a greeting.
Eus

avatarsupporter
sent on April 22, 2019 (21:26) | This comment has been automatically translated (show/hide original)

QUOTAS Beautiful.
Congratulations.
a greeting.
Eus
Thank you :-)
A greeting to you
Raffaella

avatarsenior
sent on April 22, 2019 (21:30) | This comment has been translated

Amazing in every respect, congratulations!

avatarsupporter
sent on April 24, 2019 (20:37) | This comment has been automatically translated (show/hide original)

Gorgeous in all compliments

Thank you Roger :-)
Hello
Raffaella

avatarsenior
sent on April 26, 2019 (10:30) | This comment has been automatically translated (show/hide original)

Always at the top our Raffaella!
Talented
Hello
Ermanno

avatarsupporter
sent on April 26, 2019 (15:10) | This comment has been automatically translated (show/hide original)

QUOTAS Always at the top our Raffaella!
Talented
Hello
Ermanno
Thank you Ermanno, always kind :-P
Ciao
Raffaella

avatarsenior
sent on April 29, 2019 (14:18) | This comment has been automatically translated (show/hide original)

Beautiful.. Congratulations
Pier


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