Someone asked how loud Tibicens were in terms of decibels. According to the University of Florida Book of Insect Records the Tibicen resh has a maximum sound pressure level of 107.2db, and the Tibicen pronotalis has a max SPL of 108.9db. Other species of Tibicen seem to max out around 80-100db.
Bonus: here’s a few unrelated links:
A French Canadian Tibicen page (thanks Roy).
Return of the Cicadas from WTVN.