A worldwide community photographing and learning about wildlife
Sphodromantis viridis
Ooh, it looks like a Sphodromantis viridis. Certainly not Mantis religiosa.
The Sphodromantis viridis I think is introduced to Italy and Spain and Portugal:
http://www.entomologiitaliani.net/public...
http://www.projectnoah.org/spottings/596...
http://www.ncbi.nlm.nih.gov/pmc/articles...
This would be a nice addition to the global Mantis mission: http://www.projectnoah.org/missions/1573...
This is a beautiful mantis! However, I do believe this is not a European Mantis. The body shape and patterning on the wings are not consistent. More likely this is either a Sphodromantis or Hierodula species. Unfortunately, I am not familiar with the species found in your area.
Perhaps you can find some local resources that have more information.