April 18, 2026
Ants, but make it spa day
Scientists discover "cleaner ants" that groom giant ants in Arizona desert
Tiny “spa staff” pamper giant ants — and the comments lose it
TLDR: Scientists found small “cleaner” ants grooming much larger harvester ants in Arizona — a first for insects. The comments split between wonder at ant spa etiquette, debates about intelligence versus instinct, and jokes about human-sized cleaners, with a side of link wars over who posted it first.
Arizona just opened the hottest new spa — for ants. A scientist spotted tiny cone ants hopping onto giant harvester ants to lick and nibble them clean, even inside those scary open jaws. It’s the first time anyone’s seen one ant species play “cleaner” for another — think fish at a reef, but sandier. And online, the crowd went full reality show.
The brainy bunch is split between awe and side-eye. Some are marveling at the mind games of mutual benefit: big ants get a scrub, small ants get snacky bits. Others are wondering if these cone ants are as adaptable as the famous cleaner fish — or just one-trick desert stylists. Meanwhile, the jokesters crashed the thread: one user deadpanned, “why hasn’t any animal adapted to this role for humans,” while another winked at the headline’s wording, calling it “the oldest profession.”
There’s also classic comment-section drama: a “seen it in the NYT first” link-dropper showed up, sparking the usual timeline tussle. But most readers are hooked on the visuals: big red warriors standing statue-still while tiny cleaners crawl all over them, then shaking them off like a diva leaving the salon. Nature’s weird, and the comments are weirder — which is exactly why everyone’s glued to this ant soap opera.
Key Points
- •First documented case of one ant species cleaning another was observed in southeastern Arizona.
- •Mark Moffett reported the behavior in Ecology and Evolution, comparing it to marine cleaner fish.
- •Harvester ants (Pogonomyrmex barbatus) approached cone ant nests and allowed grooming with open mandibles.
- •Cone ants (an undescribed Dorymyrmex species) licked and nibbled for 15 seconds to over five minutes, even inside jaws.
- •Researchers hypothesize mutual benefits and plan to study impacts on infection risk and microbiomes; cone ants ignored dead ants.