Still, they only sacrifice themselves to defend or protect their colony -- they'd never just send wave after wave of suicide-destined ants for an unprovoked attack, right?
Wrong. Lasius neglectus (or "the Asian super ants") are naturally drawn to electricity, with a desire that's actually stronger than their need to eat and drink. Swarms of these ants can and have caused blackouts in Great Britain. Once one ant gets zapped, an alarm pheromone is sent out that calls swarms of their brethren to attack and attack until, eventually, the power goes out. Millions of ants will immolate themselves and, frankly, science has no idea why. And don't think only Britain is doomed. Other ants have been known to attack electricity, like the fire ants in this video:
If you don't know what's scary about ants that aren't afraid to kill themselves to destroy electrical power, then you've never had that nightmare where a nationwide blackout happens and billions of ants use the cover of prolonged night to crawl into our mouths while we're cowering in the darkness.
(Until tonight, that is.)