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

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 / Gavin Thurston and Howard Bourne, filming Harvester ants in Arizona, with 'Frankencam', specialised camera equipement for filming ants.

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

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

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

Martin Dohrn / Maricopa harvester ant (Pogonomyrmex maricopa) (middle) fighting a different species of ant (Aphaenogaster sp) over territory

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

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

Rolf Nussbaumer / Red Harvester Ant (Pogonomyrmex barbatus), adult on lichen. Laredo, Webb County, Texas, USA, April.

Nick Upton / European harvester ants (Messor sp) bringing Rock rose (Cistus sp) flower petals back to their nest. Corsica, France, May.

Mark Moffett / Ant (Dorymyrmex sp) workers climbing on a larger Harvester Ant (Pogonomyrmex maricopa) to lick her body clean, Portal, Arizona

Albert Lleal / Harvester Ant (Messor sp) SEM close-up view of leg at 210x magnification

Albert Lleal / Harvester Ant (Messor sp) SEM close-up view of eye at 140x magnification

Albert Lleal / Harvester Ant (Messor sp) SEM close-up view of eye facets at 700x magnification

Albert Lleal / Harvester Ant (Messor sp) SEM close-up view at 14x magnification

Rolf Nussbaumer / Red Harvester Ant {Pogonomyrmex barbatus} adult portrait, Hill Country, Texas, USA

Nick Upton / Harvester ants {Messor sp} carrying Barley seedheads along path, Colliseum, Rome, Italy

Mark Moffett / Harvester Ant (Messor sp) pair harvesting seed, Israel

Piotr Naskrecki / Weaver Ant (Oecophylla longinoda) two workers killing a worker Harvester Ant (Pheidole sp), Guinea

Kim Taylor / Harvester ants {Messor sp.} from neighbouring colonies engage in a skirmish, Kenya, Africa.

Mark Moffett / Harvester Ant (Messor barbarus) carrying seed, Kerman, Iran

Konrad Wothe / Harvester Ant (Messor sp) colony at nest with some carrying seeds, Greece

Scott Leslie / California Harvester Ant (Pogonomyrmex californicus) group near Sedona, Arizona

Premaphotos / Harvester ant (Messor barbara) worker ants carrying seeds they have collected, Spain