The weirdness inherent in the metamorphic life cycles of insects causes them to be subject to metaphorical application, and the anxiety they frequently inspire makes them especially suited to tales of post-mortem afterlives. This chapter considers the golden age of the ghost story and identifies within that tricky genre an important subgenre, hitherto unexplored, of spectral insects. It demonstrates how, in the ghost story, the affective force of entomological rhetoric is most usually directed to inspire fear of what was once fleshly and is now transformed into the insubstantial and the exoskeletal. This is humanity’s ultimate “Other” manifesting as a visual phenomenon or sonic event, invasive, arriving singly or as a demonic horde, perhaps monstrously magnified, instinctive or vengeful, preying on the body or the mind when most vulnerable, and potentially driving the living to death or insanity. Bugs that go “Boo!” make the skin crawl like nothing else can.