Tenebrio molitor, commonly known as the mealworm beetle, is notable for its larval stage, widely recognized as mealworms. Native to temperate regions, these beetles thrive in dark, damp environments. Mealworms have a cylindrical, segmented body, which aids in burrowing through their preferred habitats. They play a vital role in decomposition and nutrient cycling.

Tenebrio molitor, commonly known as the mealworm beetle, is native to Europe. However, due to human activities, it has been introduced to many parts of the world, including North America, Asia, and Australia.

Tenebrio molitor typically inhabits environments where it can find food sources such as decaying leaves, dead insects, and stored grains. It is commonly found in agricultural settings, grain storage facilities, and domestic environments where it can access food supplies. The species thrives in moderate to warm temperatures and can adapt to various humidity levels.

The ecological niche of Tenebrio molitor includes acting as a decomposer, feeding on decaying organic matter and contributing to nutrient cycling in ecosystems. It is also an important food source for various predators, including birds, reptiles, and small mammals. In its larval stage, it is often used as a feeder insect in pet care and scientific research.