Here are some little-known but unverified facts about this episode :)
* The given name for the Planet Zanti is Zant; Zanti is actually a nickname. Zanti was chosen as the planet's name to make it less than obvious that the planet was named for an ant. It's also because it rhymes with "auntie", as in "Zanti Mame". The large mounds of earth and rock near the Zanti spaceship are known as "zanthills".
* The inspiration for the humanoid faces on the Zantis was the 1958 horror film "The Fly", which featured, near the end of the film, a fly with the head and arm of a human being (Al Hedison). However, the fly even sounded human ("Help me! Help me!"), having exchanged atoms with a scientist, whereas the Zantis only buzzed, disturbingly so. "The Fly" then evolved, or de-evolved (either word is correct depending upon your point of view) into the 1986 film version, in which the entire scientist becomes a hybrid of a fly and a human being.
* Ben Garth, the Bruce Dern character, didn't use the gun in the glove compartment to attack or defend against the Zanti Misfits, because he knew it wasn't loaded.