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The giant house spider has been treated as either one species, under the name Eratigena atrica, or as three species, E. atrica, E. duellica and E. saeva. As of April 2020, the three species view was accepted by the World Spider Catalog. They are among the largest spiders of Central and Northern Europe.
Eratigena is a genus of spider in the family Agelenidae.Most of its species were moved from the genus Tegenaria in 2013, of which the genus name is an anagram. [2] Two species that frequently build webs in and around human dwellings are now placed in this genus: the hobo spider (Eratigena agrestis), native to Europe and Central Asia and introduced to North America, and the giant house spider ...
Eratigena agrestis (Walckenaer, 1802) — Europe to Central Asia. Introduced to USA, Canada; Eratigena arganoi (Brignoli, 1971) — Italy; Eratigena atrica (C. L. Koch, 1843) — Europe. Introduced to Canada, USA; Eratigena balearica (Brignoli, 1978) — Spain (Balearic Is.) Eratigena barrientosi (Bolzern, Crespo & Cardoso, 2009) — Portugal
Found hiding behind the fireplace or in the bath, giant house spiders are preparing to enter homes across the UK as mating season begins
Giant house spider (Eratigena atrica), common in the Midlands. [9] Clubiona trivialis, a sac spider very common in the Midlands. [10] There are approximately 1,107 species of arachnid native to Ireland. [11] Not up to date for all taxa. Arachnids are eight-legged chelicerate arthropods with pedipalps and bodies divided into two tagmata.
The body length of the smallest Agelenidae spiders are about 4 mm (0.16 in), excluding the legs, while the larger species grow to 20 mm (0.79 in) long. Some exceptionally large species, such as Eratigena atrica, may reach 5 to 10 cm (2.0 to 3.9 in) in total leg span. Agelenids have eight eyes in two horizontal rows of four.
It is a resident of fields, avoiding human habitations occupied by major competitors, particularly the giant house spider (Eratigena atrica), which is a common resident of houses and other man-made structures in Europe.
Giant house spider, Eratigena atrica (formerly Tegenaria gigantea) Hobo spider, Eratigena agrestis (sometimes called aggressive house spider) Geometric house spider or house button spider, Latrodectus geometricus (more commonly known as the brown widow) Southern house spider, Kukulcania hibernalis; Tiny house spider, Oonops domesticus