Spider germ
The term "spider germ" is not in the episode. Is there an out of universe precedent for this or is this a completely conjectural title?
Talk about it here.
Needs links, categories, citation, and needs to decide whether or not it's capitalized.
These problems might be so great that the article's factual accuracy has been compromised. Talk about it here or check the revision history or Manual of Style for more information.
Spider germs were eukaryotic creatures that appeared on the surface of the Moon, which was in reality the eggshell for a gigantic draconian creature. While close to the size of "a badger", they were indeed unicellular creatures. Their main food supply came from feeding off a creature that was growing inside the moon. They resembled spider-like creatures, and apparently could only sense sudden movements.(TV: Kill the Moon).