Formica aerata, the California grey field ant, tending aphids on a willow branch. Hallelujah Junction, California, USA - Alex Wild Photography - Insect Photography

Formica

is an ubiquitous formicine genus across temperate regions of the northern hemisphere. These large, alert ants are diverse in behavior and ecology. Formica includes some slave-raiders as well as less extreme forms of social parasitism.

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Formica accreta

El Dorado County, California, USA

Formica aerata, the California grey field ant, tending aphids on a willow branch.

Hallelujah Junction, California, USA

Formica aerata, the grey field ant

Hallelujah Junction, California, USA

Formica argentea male

Emigrant Gap, California, USA

Formica argentea (the silver/grey ant) is a frequent host species for the 'slave-raiding' ant Polyergus breviceps (red). Here, I have disturbed a hibernating nest in early spring. The red Polyergus are slow to wake, but their skittish captives are active earlier in the season and come to life.

Sagehen Creek Field Station, California, USA

Formica aserva, worker.

California, USA

Formica aserva, one of the socially parasitic Formica species.

Blodgett Forest Research Station, California, USA

Ants are meticulously clean animals. This Formica densiventris worker grooms her foreleg by passing it through brushes in her mouthparts.

Truckee, California, USA

Formica aerata, the California grey field ant, tending aphids on a willow branch.

Hallelujah Junction, California, USA

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Formica

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