They were saying something on bulbagarden (I'm not a member, just a lurker) that either Wargle has a preevo....or there's another bug pokemon.
I vote Wargle preevo.
Also, about that circle face on desukan. Didn't pokexperto's description of it's preevo say it was holding a mask? Do you think maybe desukan's preevo is holding a similar mask to the decorative one above desukan's face?