Lasius pallitarsis brood nest inside a log. The galleries are constructed from carton, a wood pulp and fungal mix molded by the ants. Sierra Nevada, California, USA
The intricate galleries in this underground nest of Lasius aphidicolus are made possible by a fungus that grows within a matrix of wood pulp sculpted by the ants. Vermilion River Observatory, Illinois, USA
Pulling back bark from a dead tree reveals the nest galleries of a colony of Lasius. South Bristol, New York, USA.
