On the Web Planet, also known as Doctor Who on the Web Planet and Doctor Who and the Zarbi on the Web Planet, was a TV Comic story featuring the First Doctor, John and Gillian. Notably, it was the only TVC First Doctor story to be given an official title, due to the previous story's preview, as all other titles were invented later by comic strip historians. (DWCC 1)
The Doctor returns to Vortis to discover the Menoptra are once more under threat by Zarbi. This time the giant ants are being directed by the alien Skirkons. Disguised as flying Zarbi they have come to plunder Vortis of an energy giving mineral, Galvinium X.
This story began running in TV Comic one week after the conclusion of the television story The Web Planet, which had introduced the setting and characters.
According to The Terrestrial Index, this story is alternately titled Return to the Web Planet.
For the purposes of this list, a "Zarbi story" is one in which one living, authentic Zarbi plays a part within the confines of the story, outside of flashbacks to previous stories and cliffhangers that lead into the following story.