Unfortunately, competition for armor-plated pussy can get pretty fierce, and weaker males can have trouble outdoing the eviscerated cockroaches seductively waved around by stronger, more confident men. Those bastards! How do you compete with that?!
"Just look at the size of his tail bulge!"
Well, you'd think maybe they'd try to steal the kills from the bigger males, or something that makes you feel proud of the nerds of the species. But you forget that bugs really don't have a concept of "dignity."
"Is there something in my proboscis?"
So, taking a page from about a million '80s high school comedies, the desperate underdog males will sometimes impersonate females. You know, so that the tough-guy males will offer them juicy bugs in order to mate with them. Then the little guy simply takes those offerings and regifts them to score himself some segmented tail. Next time you see some douchebag picking up college girls in his Ferrari, just dress in drag long enough to swipe the keys.
Warning: Moderate-to-heavy fondling may be required.