Overview of Spider Species in the United States
Steatoda borealis, a spider species that belongs to the genus Steatoda is one of the members family of Theridiidae. In United States, they are found east of the Rocky Mountains as well as in Alaska. Many spiders in the genus Steatoda are frequently misidentified as widow spiders and are dubbed “false black widows”. And even […]
The bowl and doily spiders, known as Frontinella pyramitela, are a small species of spiders that belong to the family of Linyphiidae. The common name of these spiders comes from its peculiar webs that have a bowl shape with a sheet-web or blanket (doily) beneath it. Like other sheet web weavers, Frotinella pyramitela spiders can […]
The arrow-head spider, Verrucosa arenata, is an orb-weaver spider found throughout the United States. Its common name arrowhead spider or triangle orb weaver comes from the triangle-shaped yellow or white coloration on the spiders’ abdomen. Arrow-Shaped Orbweaver Description Verrucosa arenata are generally easy to distinguish from similar orb weavers because of their special color pattern and […]
Scotophaeus blackwalli, the mouse spider is a ground spider that is common in Central and Northern Europe and the Western United States. The spider is not of medical significance and should not be confused with the venomous mouse spiders found in Australia of the genus Missulena. Description of the mouse spider The mouse spider is […]
The red-backed jumping spider, Phidippus johnsoni, is found throughout the Western United States and Canada. The spider has a black body and the back of its abdomen is bright red. Description of the Red-Backed Jumping Spider The redbacked jumping spider is generally quite easy to identify. It’s body is predominantly black with a brightly red […]
Latrodectus hesperus, the Western black widow spider is one of the few medically significant venomous spiders in the United States. As its common name suggests, it can be found in the Western States of the US as well as in Canada. Description of the Western Black Widow The larger female Western black widow looks very […]
Eratigena agrestis, commonly know as the hobo spider, is a funnel web spider that can be found in the Pacific Northwest. In the 90ies, the hobo spider has been listed as a medically important species. However, over the last 30 years, no actual evidence has been found that the spider is actually dangerous for humans. […]
The Araneus Gemmoides is an orb weaver species that occurs in the Western United States. It is also known under the common names cat-faced spider or jewel spider. Both common names reflect the special traits of the body of Araneus gemmoides. The abdomen is large and if seen from the front, cat-faced. Others consider the […]
