I know spiders aren't insects, but my least favorite bug-like organism involves something that looks like an ant. It's basically a spider that has mastered the art of mimicry through generations of evolution, and it causes fear and obfuscation in my mind every time I observe them. Overall, I hate them the most because they take on the appearance of a harmless ant, while deep down inside, they're evil spiders waiting for an attack. I would most certainly run away.