Archive · 1 Dec 2025
Parasitic Ant Queens Trick Workers to Kill Their Own Queen
Scientists have discovered a fascinating and dramatic behavior in some parasitic ant queens.
These queens can sneak into another ant colony and trick the worker ants into killing their own queen.
The parasitic queen does this by spraying the real queen with a substance, likely defensive formic acid.
This makes the worker ants attack and kill their mother.
Once the real queen is gone, the parasitic queen takes over the colony and uses the worker ants to care for her own eggs.
This behavior was first observed by an ant enthusiast in Japan and later studied by scientists.
It's a clever strategy that helps the parasitic queen quickly establish her own colony without the hard work of building it from scratch.
Parasitic ant queens of the species Lasius orientalis can trick worker ants into killing their own queen.
The parasitic queen sprays the real queen with a substance, likely defensive formic acid, prompting worker ants to attack.
Worker ants, which are the queen's daughters, bite and kill their mother after being tricked by the parasitic queen.
This behavior was first observed by an ant enthusiast in Japan and later studied by scientists, published in the journal Current Biology.
The parasitic queen takes over the colony and uses the worker ants to care for her own eggs, skipping the hard work of building a new colony.
- Who
- Parasitic ant queens of the species Lasius orientalis and worker ants of another species
- What
- Parasitic ant queens trick worker ants into killing their own queen
- When
- The discovery was made a few years ago, with the study published in 2023
- Where
- Mountainous region in Japan, observed in a controlled setting
- Why
- To take over the colony and lay their own eggs with the help of existing worker ants
- Parasitic Species
- Lasius orientalis
- Host Species
- Another ant species (not specified)
- Discovery Location
- Mountainous region in Japan
- Discovery Year
- 2021 (blog post), 2023 (formal study)
- Researchers
- Taku Shimada (ant enthusiast), Keizo Takasuka (entomologist)
- Journal
- Current Biology
- Substance Used
- Defensive formic acid (likely)