Giant house spider

Description:

Female body size can reach 18 mm in length (making it the largest members of the family), with males having a slightly smaller body at around 12 mm to 15 mm in length. The female leg span is typically around 45 mm. The leg span of the male is highly variable, with spans between 25 mm to 75 mm being common. The Giant house spider has the same coloration as the Domestic house spider; it has earthy tones of brown and muddy red or yellow. They also have conspicuously hairy legs and abdomen.

Habitat:

The Giant house spider is indigenous to north western Europe. However, it was unwittingly introduced to the Pacific Northwest of North America circa 1900 due to human activity and strongly increased in numbers for the last decade. The webs built by the Giant house spider are flat and messy with a funnel at one end. The spider lurks in the funnel until a small invertebrate happens to get trapped in the web, at which point the spider runs out and attacks it. They usually build their webs in corners (on both the floor and ceiling), between boxes in basements, behind cupboards, in attics, or any other area that is rarely disturbed by large animals, or humans. Often found near window openings. Males can often be seen wandering around houses during the late summer and early autumn looking for a mate.

Notes:

Like most spiders, the spider possesses quite a potent venom to subdue its prey, which is not known to harm humans. Since T. duellica can penetrate regular human skin on normal occasions, the effects of agatoxin are more likely to be felt by the victim. No medically significant reports of its bites exist up to the present date. With speeds clocked at 1.73 ft/s (0.53 m/s), the giant house spider held the Guinness Book of World Records for top spider speed until 1987 when it was displaced by sun spiders (solfugids) although the latter are not true spiders as they belong to a different order