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  1. Galleries
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  4. » Samia cinthya (male specimen)

 
Samia cinthya (male specimen)...

FALENE

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Samia cinthya (male specimen) sent on November 13, 2019 (9:18) by Lucchin Fabrizio. 50 comments, 1829 views. [retina]

, 1/60 f/10.0, ISO 400, tripod. Specie: Samia cynthia

Il bombice dell'ailanto o filosamia (Samia cynthia (DRURY, 1773) è un lepidottero appartenente alla famiglia Saturniidae, originario dell'estremo Oriente (regioni asiatiche della Russia, Cina, Giappone), ma introdotto anche in Europa, Nordafrica, Medio Oriente e America settentrionale. Descrizione: L'adulto ha un'apertura alare che può raggiungere anche i 16,5 cm, ha una livrea di colore bruno-verdastra o giallo-brunastra; entrambe le ali portano una macchia a forma di semiluna, di colore digradante dal bianco al giallastro e bordata di nero sul lato costale; le anteriori presentano inoltre una piccola macchia ocellare nera associata ad una sfumatura cinerea o violacea all'apice della regione submarginale. La livrea è ornata da strisce di colori variabili fra cui spicca una vistosa fascia trasversale di colore violaceo o cinereo o biancastro, bordata di nero sul lato prossimale. L'uovo è di forma semisferica e di colore bianco. La larva mostra un polimorfismo in funzione dell'età: inizialmente è di colore giallo-verdastra, con capo e protorace bruni e con addome recante tubercoli bruni; a maturità è di colore bluastro, con capo giallastro e tegumento disseminato di punteggiature nere e tubercoli azzurri. La lunghezza arriva ai 15 cm. Biologia: La specie svolge un ciclo con una o due generazioni l'anno, con svernamento allo stadio di crisalide. Gli adulti compaiono in primavera inoltrata, si accoppiano e le femmine depongono poche centinaia di uova, in gruppi di una decina di unità, sulle foglie della pianta ospite. L'incrisalidamento ha luogo con la costruzione di un bozzolo di seta di colore bruno, aderente ad una foglia e fissato ai rami con un cordone di seta robusta lungo anche fino a 20 cm. Distribuzione e impieghi: Le larve sono allevate per la produzione di una seta più robusta di quella del bombice del gelso, detta "seta eri" e utilizzata per produrre un tessuto detto kien cen. Importata nelle regioni occidentali del pianeta per la produzione della seta, la specie si è naturalizzata anche sulla costa orientale nordamericana, in Francia, Italia, Svizzera, Ungheria, Austria, Croazia e Uruguay. In Italia fu introdotta nel 1854 usando come pianta ospite l'Ailanthus altissima, Le uova sono deposte sulle foglie, e le larve si alimentano primariamente con le foglie di questa pianta, ma la specie è secondariamente associata anche ad altre specie botaniche appartenenti a vari generi (Ricinus, Sambucus, Ligustrum, Pyrus, ecc.). Sotto l'aspetto agrario, la specie non rappresenta alcun rischio per la limitata entità dei danni prodotti dai bruchi defogliatori. La cessazione della produzione di tale seta in Italia (soprattutto nella regione subalpina) ha lasciato residue presenze in natura della falena, che sfuggita dagli allevamenti continua a riprodursi in natura sull'ailanto ormai anche lui naturalizzato, dato che questo ultimo è stato usato per il consolidamento delle scarpate ferroviarie.



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avatarsupporter
sent on November 13, 2019 (9:48) | This comment has been automatically translated (show/hide original)

Fabrizio with this you have hit the bench .... :-) I like it all over ....

avatarsupporter
sent on November 13, 2019 (10:35) | This comment has been automatically translated (show/hide original)

Perfect and beautiful the photo that you propose with your usual mastery, the detail is super, I also really like the background that contributes not a little in the exaltation of the features of the shot, congratulations Fabrizio! ;-)
The description you make of this beautiful specimen is perfect and timely.
Hello,Mark.

avatarsupporter
sent on November 13, 2019 (11:16) | This comment has been automatically translated (show/hide original)

Beautiful photo!
Great colors and detail, all well highlighted by the dark background.
Very interesting and instructive even the note, I did not know you could meet here in northern Italy. That would be really exciting!
Congratulations, hello, Alexander

avatarsupporter
sent on November 13, 2019 (11:37) | This comment has been automatically translated (show/hide original)

Insured EP!!!! :-o :-o :-o :-o :-o :-o

avatarsenior
sent on November 13, 2019 (12:11) | This comment has been automatically translated (show/hide original)

Wordless :-or :-o :-or :-or !!! Applause!!! Angel

avatarsenior
sent on November 13, 2019 (12:59) | This comment has been automatically translated (show/hide original)

A unique beauty exhibition,
congratulations for the most excellent photo!!!

avatarsupporter
sent on November 13, 2019 (13:33) | This comment has been automatically translated (show/hide original)

Wonderfully beautiful!

avatarsenior
sent on November 13, 2019 (14:00) | This comment has been automatically translated (show/hide original)

Gorgeous in everything :-P ! Congratulations! Hello.

avatarsenior
sent on November 13, 2019 (14:07) | This comment has been automatically translated (show/hide original)

MAGINIFCAAAAAAAAAAA!!!!!!!!

avatarsenior
sent on November 13, 2019 (14:12) | This comment has been automatically translated (show/hide original)

Beautiful Fabrizio!!!!!!

avatarsenior
sent on November 13, 2019 (14:21) | This comment has been automatically translated (show/hide original)

Beautiful specimen, great details and caption!

avatarsupporter
sent on November 13, 2019 (14:43) | This comment has been automatically translated (show/hide original)

Beautiful image of this certainly not minute subject, where your ability has been able to show us a valid frame.

avatarsenior
sent on November 13, 2019 (16:10) | This comment has been automatically translated (show/hide original)


Fantastic .....
a jump.
mt

avatarsenior
sent on November 13, 2019 (16:14) | This comment has been automatically translated (show/hide original)

A great photo!
Hello

avatarsupporter
sent on November 13, 2019 (16:52) | This comment has been automatically translated (show/hide original)

Fulvio
Marco
Alessandro

Nadia
Angelo
Gandino
Susy
Mario

Francesco
Andrea
Giampaolo

Pier
Maurizio

Alfredo
Thank you for the beautiful adjectives used in your comments to this very beautiful butterfly that nature has offered us. A warm greeting to everyone, hello Fabrizio

avatarsenior
sent on November 13, 2019 (19:26) | This comment has been automatically translated (show/hide original)

What a beauty, both the subject and the photo, congratulations! :-)

avatarsenior
sent on November 14, 2019 (3:47) | This comment has been automatically translated (show/hide original)

A Fabrizio show!!! ;-)

avatarsenior
sent on November 14, 2019 (6:15) | This comment has been automatically translated (show/hide original)

Wow!! What a beautiful image Fabrizio, so much sharpness and details.
Congratulations. ;-)
A flower greeting.

avatarsupporter
sent on November 14, 2019 (7:10) | This comment has been automatically translated (show/hide original)

Just great. Congratulations.
Hello, Rosario

avatarsenior
sent on November 14, 2019 (7:26) | This comment has been automatically translated (show/hide original)

just perfect
congratulations

hello
Savile


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