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I watched the 'eye-glasses' marking on the pronotum.

On my photo, the cicade seems to have 'gleichseitige(hard to see) flecken' under the 'Thyridialflecken (A. heydenii got them above this black spot)

When I looked at the cicade Idiocerus herrichi on: http://gallery.kunzweb.net/main.php?g2_itemId=279
It seems that such cicade got these black triangle too (under the Thyridialspot)

that gives me the conclusion that I am further from home, know a bit more about these group of cicade.
A good shot from the face of the cicade can give some help to identify.

thanks for your links and help!

Robert,