The Six-Eyed Arachnid Misconception: A Look at the Woodlouse Spider’s Vision

The Woodlouse Spider: A Unique Predator

The woodlouse spider is an arachnid that has gained attention for its distinctive appearance and powerful bite. Scientifically known as Dysdera crocata, this spider is a formidable hunter in its ecosystem.

How to Identify the Woodlouse Spider

The woodlouse spider can be easily recognized due to its reddish-brown body, large shiny jaws, and six eyes arranged in a semicircle. This unique feature sets it apart from most spiders, which typically have eight eyes. The spider’s relatively large fangs allow it to pierce the tough exoskeletons of woodlice, its primary prey.

Is the Woodlouse Spider Dangerous?

Despite its fearsome appearance, the woodlouse spider is not among the top five venomous spiders in North and South America. Its venom is mild and poses little risk to humans, resulting in localized redness and swelling similar to a bee sting. These spiders are unlikely to bite unless handled or provoked.

Where Is the Woodlouse Spider Commonly Found?

Woodlouse spiders can be found in nearly any dark, damp environment where their prey thrives. They have a particular preference for areas with partially decayed wood, such as under logs, in leaf litter, or near compost heaps. In urban areas, they often make their homes in basements, crawl spaces, and plant pots.

What Attracts and Deters Woodlouse Spiders?

Woodlouse spiders are attracted to environments with abundant prey, such as woodlice and other small arthropods. Damp areas with partially decayed wood or compost heaps are ideal hunting grounds for these spiders. To deter them, reducing moisture levels around your home and removing debris like wood piles or leaf litter can be effective. Sealing cracks and crevices can also prevent them from wandering indoors.

If you find a woodlouse spider in your home, it’s likely just passing through in search of prey. Safely relocating it outside will allow both the spider and you to coexist peacefully.