Why is the magnetic termite’s nest oriented north to south?

The magnetic termite (Amitermes meridionalis) constructs its wedge-shaped mounds with a strict north-south orientation to help regulate the internal temperature of the nest. By aligning the long axis north-to-south and the broad side east-to-west, the structure is positioned to catch morning and afternoon sunlight, which serves as a natural alternative to central heating.12

While these insects are commonly called "magnetic termites," it is important to clarify that geomagnetism is not involved in the alignment of the building as a whole. Instead, this orientation is an instinctive architectural adaptation that ensures the colony maintains an optimal microclimate, protecting the termites from extreme temperatures while providing necessary shelter.213