Nature Production / Kuronagaari ant (Messor aciculatus) carrying dandelion seed.

Martin Dohrn / Maricopa harvester ant (Pogonomyrmex maricopa) fighting a different species of ant (Aphaenogaster cockerelli), over territory Arizona, USA

Mark Moffett / Harvester Ant (Messor sp) returning to nest with a seed it has collected to husk and store, near Kerman, Iran

Cyril Ruoso / Harvester ant (Messor sp) winged queen, Alberes Mountains, Pyrenees, France, October.

Cyril Ruoso / Harvester ant (Messor sp) winged queen, Alberes Mountains, Pyrenees, France, October.

John Abbott / Harvester Ant (Pogonomyrmex barbatus) worker, Bruce Moring Ecolab, Edwards County, Texas, USA.

John Abbott / Harvester Ant (Pogonomyrmex barbatus) worker, Bruce Moring Ecolab, Edwards County, Texas, USA.

Nick Upton / Major worker of European Harvester Ant (Messor sp.) dragging a small Plantain flowerhead towards its nest. Algarve, Portugal, June.

Nick Upton / European Harvester Ant (Messor sp.) major workers co-operating to drag a Plantain flowerhead towards their nest. Algarve, Portugal, June.

Martin Dohrn / Harvester ant (Pogonomyrmex maricopa) habitat in Arizona, August 2009

Martin Dohrn / Harvester ant (Pogonomyrmex maricopa) with feather, Arizona USA

Martin Dohrn / Maricopa harvester ant (Pogonomyrmex maricopa) fighting a Long legged ant (Aphaenogaster cockerelli), over territory Arizona, USA