Dustox
I think it's Lv 11. Hope I Helped.
lv10, Cascoon evolve into Beautifly.
You have to capture a wild dustox in Pearl, capture a cascoon in Pearl and avolve it, or evolve a wurple in Diamond or Pearl and hope it becomes a cascoon.
in pokemon diamond a cascoon evolves at lvl 27
Cascoon evolves into Dustox at level 10
To evolve a cascoon, it must gain levels. To gain a level with a cascoon, either attack with it, or if impossible, place it as your active pokemon and switch out at the start of the battle. If you have a EXP share, give the cascoon that and battle with a different pokemon.
Silcoon and Cascoon.
There is a 50/50 chance that a Wurmple will evolve into a Cascoon instead of a Sillcoon. There is no further way to know.
The Pokemon cascoon will evolve into Dustox at level 10 =D
Cascoon and silcoon evolves at lv 10 (i hope i helped)
Level 10.
Wurmple can go one of two ways, it can evolve into a Silcoon or a Cascoon. Silcoon evolve into Beautifly. On the other hand, Cascoon evolves into Dustox.