im trying to make a potion and i need blue butterfly wings. the only two places the strategy guide tells me to go does not have them there. Does anyone know where i might find some?

Go explore (around Whiterun/Riften) and you will see blue Butterflies flying. Chase them down and when you have the cursor over them, activate it.

Almost anywhere in the world. Just walk around - see the pretty blue butterflies? Grab them.... get wings....