Why might a Woodlouse Spider be observed inside a building during dry outdoor conditions?

Answer

Following its primary food source indoors to find reliable humidity.

The movement of the Woodlouse Spider indoors is strongly linked to the survival requirements of the woodlouse. Since woodlice require consistent humidity and protection from desiccation, they often migrate into sheltered, damp areas inside human structures, such as basements, garages, or sheds, especially during dry periods outdoors. The *Dysdera crocata* follows this primary food source indoors, meaning the presence of the spider inside is often an indicator of an underlying woodlouse congregation seeking reliable moisture.

Why might a Woodlouse Spider be observed inside a building during dry outdoor conditions?
dietspiderarachnidwoodlouse