The Cicada is known as a Semi in Japan. So I'm told the Japanese Cicada spends up to 7 years (heresay) in a larval form underground awaiting just the right summer. They then emerge and shed their larval skins, transforming into their adult stage.
The park opposite my appartment is one of the reasons we chose this place. It is fairly big for a Japanese city park, has many trees and unusualy enough a wide expance of grass that you can sit on.
Now each tree is full of Cicada. Each morning we wake (are awoken to?) a screeching and scratching that would have 100,000 crickets packing away their violins in disgust. They have a very short lifespan in their adult form. Perhaps this is the reason for their urgency.
In the afternoon or early evening it is wise not to remark on how quiet they have become since that morning since they react by turning up the volume.
This morning, as every morning, they are so noisy that it is almost impossible to have a conversation from the veranda with someone sitting in the adjoining room.