How do you get a dustox in Pokemon diamond?

Answer 1

If you have a cascoon, go to step 3. If you don't, continue with step 1.

1. Catch a wurmple in eterna forest.

2. Level it up, and it should evolve into silcoon or cascoon. If it evolves into silcoon, catch another wurmple and repeat step 1.

3. Once you have a cascoon, give it an exp. share (if you have one) and level up. I f you don't have an exp. share, put the cascoon first in your party and switch it out as soon as the battle starts.

4. Once you have leveled it up, it will evolve into dustox. If you want beautifly, do the same thing, but with silcoon.