Red House Spider Nesticodes rufipes

This is the globe-trotter of the spider world—spread across tropical regions worldwide thanks to hitchhiking aboard ships and airplanes. It's so distinctive that scientists created an entire genus just for this one species, making it monotypic (the only member of its kind). The spider arrived in homes across the planet through international commerce, turning what was once a regional species into a truly cosmopolitan resident. You'll find it lurking in warm homes and buildings, blending into shadowy corners with its distinctive reddish coloring.