Eratigena atrica, commonly known as the Giant House Spider, is characterized by its large size, with a leg span reaching up to 7.5 cm. It has dark brown or black body coloring and long, hairy legs. This spider is known for its impressive speed, making it an effective hunter. It typically resides in human dwellings, sheds, and cellars, preferring cool, damp environments. The species plays a crucial role in controlling insect populations.

Eratigena atrica, commonly known as the giant house spider, is native to Europe. Its geographical distribution is primarily across Northern and Western Europe, including countries such as the United Kingdom, Ireland, Germany, France, and the Netherlands. The species has also been introduced to North America, particularly in the Pacific Northwest, including the United States and Canada.

Eratigena atrica typically inhabits temperate regions. It prefers environments with moderate to high humidity and stable temperatures. In Europe, it is commonly found in residential areas, gardens, and forests.

In its natural habitat, Eratigena atrica occupies a niche as both a predator and a prey species. It predominantly resides in sheltered areas like basements, attics, and sheds where it can build its funnel-shaped web. This species adapts well to human structures, where it helps control insect populations by preying on flies, beetles, and other arthropods.