In Star Trek episode TNG S1E25 there was a bug which tried to take over Star Fle!
Question: The bugs were stoped but they sent out a beakon to a unknow part of the galaxy. Wanted to know if they ever did another episode of the bugs coming back??
Answers: The bugs were stoped but they sent out a beakon to a unknow part of the galaxy. Wanted to know if they ever did another episode of the bugs coming back??
The bugs didn't come back.
However, according to Star Trek: The Next Generation Companion, the Borg were originally supposed to be insects, and the bugs were the first wave. That would have tied everything together, but Borg insects were out of their budget. Cyborgs effects are cheap (duct tape and a laser pointer).
In non-TV/movie stories, they do appear again, and also get a back story. Check the link below if you care to know more.