The stem-hugging galleries of Allomerus octoarticulatus ants are made of fungal hyphae growing through a matrix of detritus.

Jatun Sacha reserve, Napo, Ecuador
The intricate galleries in this underground nest of Lasius umbratus ants are made possible by a fungus that grows within a matrix of wood pulp sculpted by the ants.

Vermillion River Observatory, Illinois, USA
The intricate galleries in this underground nest of Lasius umbratus are made possible by a fungus that grows within a matrix of wood pulp sculpted by the ants.

Vermillion River Observatory, Illinois, USA
The intricate galleries in this underground nest of Lasius umbratus are made possible by a fungus that grows within a matrix of wood pulp sculpted by the ants.

Vermillion River Observatory, Illinois, USA
The intricate galleries in this underground nest of Lasius umbratus ants are made possible by a fungus that grows within a matrix of wood pulp sculpted by the ants.

Vermillion River Observatory, Illinois, USA
Cyphomyrmex wheeleri is the most temperate of the Cyphomyrmex species, occurring as far north as San Francisco, California.  Here worker ants tend to their fungus garden.

Austin, Texas, USA
Trachymyrmex arizonensis foundress queen in her incipient fungus garden.  Notice the fine white hyphae of the mutualistic fungus as it grows over the substrate of vegetative debris she has provided for it.

Tucson, Arizona, USA
Sericomyrmex amabilis. An ant worker tends to brood in the fungus garden.  Note how the eggs and larvae are embedded within the fluffy white hyphae of the fungus.

Parque Soberania, Panama; Laboratory colony at the University of Texas
Sericomyrmex amabilis. A fungus-growing ant worker carefully tends to a larva.  Note the other ant eggs and larvae that are embedded within the fluffy white hyphae of the fungus garden.

Parque Soberania, Panama; Laboratory colony at the University of Texas
The stem-hugging galleries of Allomerus octoarticulatus ants are made of fungal hyphae growing through a matrix of detritus.

Jatun Sacha reserve, Napo, Ecuador
The stem-hugging galleries of Allomerus octoarticulatus ants are made of fungal hyphae growing through a matrix of detritus.

Jatun Sacha reserve, Napo, Ecuador
The stem-hugging galleries of Allomerus octoarticulatus ants are made of fungal hyphae growing through a matrix of detritus.

Jatun Sacha reserve, Napo, Ecuador
See photo in original gallery.
all images and text © Alex Wild 2001-2013