Honeypot ants are fascinating, but feel like something that in concept, is terrifying. And would definitely be a plotline in a Mad Max movie.
These are specalised worker ants that deliberately consume huge amounts of food, to the point where their abdomens will swell to ridiculous sizes. The sclerites (the thickened keratin armour) on their abdomens will separate, revealing the honey inside of their abdominal membrane.
These ants will collect and store liquid which other ants in the colony will then consume, basically functioning as living larders. When they become big enough, they'll hang from the ceiling and can reach the size of a blueberry or a small grape:
They're mostly found in more arid areas of the world; in hot deserts, dry woodlands and other similar habitats (Australia, North Africa, some areas in the Americas etc.). Their existence is likely to allow for colonies to store food during extreme dry seasons, or during periods where food is scarce.
There's been some research indicating that honeypot ants contain unique antimicrobial properties within their honey, which has been used by indigenous people in Australia for centuries!
(Extra note: They also go by repletes or rotunds?? I love scientists.)