Dustox is instinctively drawn to light. Swarms of this Pokémon are attracted by the bright lights of cities, where they wreak havoc by stripping the leaves off roadside trees for food. When Dustox flaps its wings, a fine dust is scattered all over. This dust is actually a powerful poison that will even make a … Continue reading Dustox, #269 – Poison Moth Pokémon
Cascoon makes its protective cocoon by wrapping its body entirely with a fine silk from its mouth. Once the silk goes around its body, it hardens. This Pokémon prepares for its evolution inside the cocoon. If it is attacked, Cascoon remains motionless however badly it may be hurt. It does so because if it were … Continue reading Cascoon, #268 – Cocoon Pokémon
Using the spikes on its rear end, Wurmple peels the bark off trees and feeds on the sap that oozes out. This Pokémon's feet are tipped with suction pads that allow it to cling to glass without slipping. Wurmple is targeted by Swellow as prey. This Pokémon will try to resist by pointing the spikes … Continue reading Wurmple, #265 – Worm Pokémon
On the other hand, May's Silcoon will evolve into Beautifly.
That's because Jessie's Wurmple evolved into Cascoon, which eventually evolves into Dustox.
May's Wurmple evolved into Silcoon, whereas Jessie's evolved into Cascoon - despite her believing otherwise.
Jessie was so convinced that hers evolved into Silcoon, but boy was she wrong.
They were so looking forward to adding Beautifly to their team.
Pokémon Blog 