Pterostichus niger is a nocturnal ground beetle species endemic to European temperate forests and grassland ecosystems, characterized by its predominantly black exoskeleton and predatory behavior.
Temperate forest floors, grasslands, agricultural margins, leaf litter, and decaying wood environments across Central and Northern Europe, typically at elevations between 0-1,500 meters above sea level
Critical predatory invertebrate in soil ecosystems, controlling populations of smaller arthropods, contributing to nutrient cycling, and serving as a bioindicator for ecosystem health
