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'{{Taxobox | name = Giant house spider | image = Tegenaria_gigantea.jpg | image_width = 250px | regnum = [[Animal]]ia | phylum = [[Arthropod]]a | classis = [[Arachnida]] | ordo = [[Araneae]] | familia = [[Agelenidae]] | genus = ''[[Tegenaria]]'' | species = '''''T. duellica''''' | binomial = ''Tegenaria duellica'' | binomial_authority = Simon, 1875 | range_map = Distribution.tegenaria.duellica.png | range_map_width = 250px }} The '''Giant house spider''' ('''''Tegenaria duellica'''''; formerly known as ''T. gigantea'') is a member of the genus [[Tegenaria]] and is a close relative of both the [[Domestic house spider]] and the infamous [[Hobo spider]]. The bite of this species does not pose a threat to humans or pets. ==Appearance== Females can reach 18 mm in length, 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 colouration 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]]. It was however 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 [[spider web|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, attics, or any other area that is rarely disturbed by large animals, or humans. Males can often be seen wandering around during the late summer and early autumn looking for a mate. ==Toxicity== Like most spiders, the spider possesses quite a potent venom to subdue its prey; but it is not known to bite humans. ==Speed== With speeds clocked at {{convert|1.73|ft/s|m/s|abbr=on}}, the giant house spider held the [[Guinness Book of World Records]] for top spider speed until 1987 when it was displaced by [[sun spider]]s (solfugids) although the latter are not true spiders as they belong to a different order.<ref>[http://www.zoo.org/factsheets/spiders/giant.html Tegenaria duellica fact sheet]</ref> ==Relationship with ''Tegenaria agrestis''== [[Image:Tegenaria duellica.JPG|thumb|right|250px|Tegenaria duellica can attain a leg span of up to {{convert|4|in|mm}}. This specimen is approximately {{convert|3|in|mm}}.]] [[Image:T_duellica_Moulting.jpeg|thumb|right|250px|A [[Moult|moulting]] T. duellica.]] A population of Giant house spiders is popularly thought to be a deterrent to the establishment of ''[[Tegenaria agrestis]]'', known in North America as the hobo spider, and considered by some to be more likely to bite humans. Giant house spiders may compete with hobo spiders for the same resources. Hobo spiders grow no more than a body size of {{convert|15|mm|in}} long as where the larger female giant house spider can have a body size of {{convert|18|mm|in}},<ref>[http://bugguide.net/node/view/31446] Bugguide, Tegenaria agrestris</ref> but has proportionately much longer legs.<ref>[http://bugguide.net/node/view/31449] Bugguide, Tegenaria duellica</ref> ==Taxonomy== This species was referred to as ''Tegenaria gigantea'' until 1995, when it was first realized that this name was a synonym of ''T. duellica'' (published in 1875), making the latter the oldest available name. Other authors suggested that ''T. gigantea'' was a synonym of ''[[Tegenaria saeva|T.saeva]]'', but molecular evidence indicates that these are distinct taxa, not synonyms.<ref>P. J. P. Croucher, G. S. Oxford, J. B. Searle (2004) Mitochondrial differentiation, introgression and phylogeny of species in the ''[[Tegenaria atrica]]'' group (Araneae: Agelenidae). Biological Journal of the Linnean Society 81: 79–89. doi:10.1111/j.1095-8312.2004.00280.x</ref> ==In Popular Culture== Humorist [[David Sedaris]] has written about his relationship with tegenaria duellica. His essay "April in Paris" documents his growing affection towards and domestic association with Giant House spiders, particularly one Sedaris named April. The essay can be found in the collection ''[[When You Are Engulfed in Flames]]''. ==References== ferret.s@hotmail.com arturo_7707@hotmail.com [[Category:Tegenaria]] [[Category:Spiders of Europe]] [[fr:Tégénaire géante]] [[lt:Didysis naminis voras]]'