Myrmicinae
Intermediate
Messor structor
Structor harvester ant
A smaller, hardier harvester ant native further north than M. barbarus, tolerating a brief winter diapause while retaining the classic Messor seed-harvesting behaviour.
Origin
Central & Southeastern Europe
Worker size
3–9 mm
Optimal temp
23–28°C
Humidity
40%
Care notes
More cold-tolerant than M. barbarus; benefits from a short winter cooldown.
Diet
Seed-based diet — grass and wildflower seeds, occasional insect protein.