![]() Only one year may be required to complete a generation among the warmer coastal regions however, inland populations, such as those living in Utah, are believed to require two or three years to complete a generation.Įggs deposited in the fall begin hatching in the spring. There is some disagreement among researchers as to the length of the hobo spider life cycle. Giant house spider has also been introduced into the Pacific Northwest, however there are no records of this spider in Utah. Originally, the hobo spider was named "the aggressive house spider," which originated from an incorrect interpretation of its species name-agrestis-which means "of the field or land." This name was given in reference to the hobo's habit of living in grassy fields in its native Europe where it is displaced in homes by its relative, the giant house spider. The spider has expanded its range south and east, and can be found extensively throughout northern Utah (Vetter et al. The hobo spider, Eratigena agrestis, is native to Europe and was introduced into the Pacific Northwest in the 1930's. If you catch a spider and would like to have it identified visit this page for instructions on submitting a sample. Without a microscope and some level of expertise you cannot distinguish a hobo spider from other similar-looking spiders. Some of the information on this page is technical and may seem too complex or difficult however, knowledge of this information is what is necessary to properly identify a hobo spider. Because of the volume of samples, phone calls, and emails we receive about this spider, This page was developed to answer any questions you might have about hobo spiders and their control. If you have questions regarding the other arachnids frequently encountered in Utah, please visit our Top 20 Arachnids page.īy far, hobos are the number 1 spider submitted to the lab, and this is because of their frequency in peoples' homes, their size and speed, and the fact that people fear hobos. Of those samples, 1,211 have been funnel web spiders (Agelenidae), and 639 have been hobos! The first hobo sample was submitted in 1990. There have been about 2,188 spiders submitted since 1978. To date, we have had over 13,500 samples submitted, 10,077 of which are insects, spiders, mites, etc. Since the late 70's the Utah Plant Pest Diagnostic Lab has kept track of all submitted samples. If the map is too small on mobile devices, just scroll down to get to the alphabetical link list of all US states and their most common spiders.Hobo Spiders (Eratigena agrestis) About this Page Here you can read more about what to keep in mind when taking a picture and describing your spider.įor an overview of spiders in your US state, click on any of the states on the map below. If you find a spider that you cannot identify yourself, send us a picture and a description of your spider to and we will try our best to identify it for you. This page provides and overview and a description for the most common spiders found in the USA. Historically, a bite of the hobo spider found in the Pacific Northwest has also been considered medically important – but recent reports show that the spider is not dangerous for humans. In fact, there are only two types of spiders in the US that can be dangerous for humans: the black widow and the brown recluse. Most of the spiders in the USA are not dangerous for humans or larger pets. The United States is home to around 3,500 species of spiders. ![]()
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