Triatoma nigromaculata is a sylvatic species of insect usually found in hollow trees, in vertebrate nests on trees and occasionally in human dwellings. It usually lives in relatively humid forests at high altitudes on mountain regions and foot hills (300 to 1700 m above sea level).
Triatoma nigromaculata is a forest-dwelling insect species commonly found in tree cavities, bird nests on trees, and occasionally human residences. It typically inhabits humid forests at high elevations on mountainous regions and foothills (300 to 1700 m above sea level).