A Battle of Bugs! The Deceivers and the Deceived!

is episode 150 of the original Naruto anime.

Synopsis
It is revealed that the bug users who kidnapped Hinata are part of a clan that was an old rival of the Aburame clan. It seeks to recover a scroll using the Bikochu Beetle in order to restore its former glory. Hinata's companions hide the Bikochu and attempt to rescue her, but are lured into a trap. Hinata attempts to escape, but is swept down a river while stuck in a cocoon.