What is a Hobo Spider?
Hobo spiders (often called aggressive house spiders) are a member of the funnel-web spider family.
There is a great deal of argument over how dangerous and aggressive these spiders are. Usually, they bite when pressed against the skin. Hobo spiders are more aggressive than many spiders because of bad eyesight and fear of starvation.
They have a common look that causes confusion with other species, from house spiders to the brown recluse. They are poor climbers and often found outside.
Hobo Spiders are Difficult to Identify
A hobo spider is often mistaken for other types because it is the definition of what a spider looks like.
Brown, with darker brown markings on its thorax. It has yellow markings on the abdomen and small soft hairs that lay against the body. These are hard to see without magnification.
Males and females have small palps near their jaw that look like boxing gloves. The palps on the female are smaller but both are tiny enough to go unnoticed by the naked eye.
The easiest identifier is that they lack rings around their legs and other marks that other species often have.
Where Does the Hobo Spider Call Home?
Hobo spiders are native to Europe. Introduced to the American Northwest, they have hitched rides to other areas where they displace native species.
In the Croach® service area, they are found in Washington, Oregon, Idaho, and Colorado. In these areas, they build webs around train tracks, in fields, and on the ground floor and in basements of homes.
A hobo spider builds a funnel-shaped web. The large end is usually anchored between two solid objects. The smaller end normally leads to an escape into a crack or hole.
A male hobo spider will travel during the day to find females, which is most often when humans encounter them. They build webs in low, out of the way, dark places. The web is not sticky but trips their prey, which they attack and eat.
Hobo spiders are most aggressive when their web is disturbed, mistaking many things for prey. They are protective of egg sacs in the web, adding to their image as being prone to attack. They are fast runners.
In most other cases they are skittish and flee contact with larger creatures.
Hobo Spider Bite and Treatment
The determination on the danger of a hobo spider bite is under debate. While most experts no longer believe it is necrotic, there are many incidents where blisters and skin problems have occurred.
In other cases, it has been no worse than a normal spider bite, becoming red and irritated. The reason is currently unknown. One theory is that due to their habit of living in low, dark, dirty places, an infection may be due to bad sanitation rather than venom.
Treatment for Hobo Spider Bite
A healthy adult can treat a hobo spider bite by gently but thoroughly washing the area and applying an ice pack. If blisters appear, pain increases, nausea, or cognitive issues occur you should seek medical attention.
Small children, elderly people, the chronically or currently ill should seek medical attention as they are more susceptible to danger. Due to inconclusive answers about the bite, Croach® recommends seeing a doctor, to be safe, no matter what.
Croach® Spider Control
We customize our spider control to your home. It always includes:
- Inspection with individual plan and proposal
- Initial treatment to remove webs and eliminate existing spiders, including interior
- First regular treatment thirty days later, breaks egg cycle and eliminates remaining spiders
- Regular treatments to apply product and remove webs, frequency dependent on severity (critical with exterior arachnids like the hobo spider)
- Complimentary retreats when necessary
- Interior treatments upon request
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