Distinctly vs Distinctively

The difference in meaning is as follows:

"Distinctly" means:

1. in a distinct manner; clearly:
   Speak more distinctly.
2. without doubt; unmistakably.

"Distinctively" means:

In a distinctive manner; in a way that is notable for its difference.

What does "distinctive" mean? It means:

1. that serves to distinguish between things
2. that is characteristic or typical of something

Thus, "distinctively" is used when someone said something "in a special way" for a special effect, such as distinguishment, while "distinctly" is clearly, or unmistakably.

Someone who said:

He spoke distinctly/means he spoke clearly
He spoke distinctively/He spoke in a manner that was notable for its difference/in a manner so that he can distinguish something he is saying.