Hobo Spider - Tegenera agretis is a species of the arachnid more commonly known as The Hobo Spider.

It is a member of the family collectively known as funnel web spiders.

It is one of the few genus of spiders found in North America whose bites are considered to be dangerous enough to warrant medical attention. They capture their food by building a funnel shaped mass of silk sheeting and lie in wait at the small end of the funnel, for their intended victim to come by.

The spiders venom is of toxsisity enough to cause geat pain, but there are also unconfirmed reports that the bite of a hobo spider can cause death.

The female hobo spider can grow up to sizes of 11-15mm (0.43-0.59 inches) . While the male can get to between 8-11mm (0.31-0.43 inches).

Even when it comes to sizes, the female has the upper hand. The Hobo spider has a light subtle colouring, a mixture of rust and brown. With a pattern in the shape of a herringbone, on the top side of their abdomen. There are other members of this family of spiders which look rather alike, so it takes a degree of technical training to be able to tell them apart.