The 21 most common pest ants in North America.
The 21 species photographed here are the most common ants encountered by pest control operators in North America. Not all species are found in all regions, however. 

Original file is 3,969 pixel-width and can be printed to small poster size; individual ants are between 200 and 600 pixels, depending on the species.
Monomorium pharaonis - pharaoh ant.

Icononzo, Tolima, Colombia
The pharaoh ant Monomorium pharaonis is an African species that is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
A pharaoh ant Monomorium pharaonis drinks from a droplet of spilled sugar water.

Icononzo, Tolima, Colombia
The pharaoh ant Monomorium pharaonis is an African species that is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
The pharaoh ant Monomorium pharaonis is an African species that is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
A busy trail of Monomorium pharaonis pharaoh ants. This species is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
A busy trail of Monomorium pharaonis pharaoh ants. This species is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
The pharaoh ant Monomorium pharaonis is an African species that is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
The pharaoh ant Monomorium pharaonis is an African species that is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
The pharaoh ant Monomorium pharaonis is an African species that is now among the most pesty house-inhabitating ants worldwide.

Icononzo, Tolima, Colombia
See photo in original gallery.
all images and text © Alex Wild 2001-2013