I made this ID chart originally to help some of my friends separate the three different species emerging right now in Brood IV. I am posting a modified version in the ID request section of the guide. All the information and data listed are derived from Dr. Cooley's website (
magicicada.org) and Cicada Mania. If the mods find this useful, they can include it in the guide.
If not, feel free to frass, thanks!
Edit: A larger version of this image can be found here -
http://i.imgur.com/DEHUKtF.jpg