There’s something about insects in literature that make them the perfect monster. It doesn’t matter how they’re written. They can be small and deadly, or gigantic and misunderstood. They can be acting on instinct or driven by hyper-intelligence. Whatever the case, they’re perfect because up close, insects can look delightfully alien, with their multitude of legs, assortment of eyes, segmented bodies, and exoskeletons.
Also because ew. Bugs.