Venomous

Steatoda Grossa – False Black Widow Spider

The Steatoda grossa, commonly called the false black widow spider or cupboard spider can be found throughout the United States. It is from the family of Theridiidae, the same as the black widow spiders. They build similar webs and have a similar body shape and color as black widows. Hence, their common name false widow. […]

Latrodectus Mactans – Southern Black Widow

Latrodectus mactans, the Southern black widow is a close relative of the Northern black widow and the Western black widow. The female of all three species is mostly black with a distinctive red hourglass pattern on the underside of its abdomen. They can inject a potent venom with their bite with potential severe medical effects. […]

Latrodectus Variolus – Northern Black Widow

Latrodectus, the black widow spider is one of the most famed and feared spider genera in the world. Hollywood tends to use only one kind of Black Widow in its films. It is always shown as a shiny black spider with a red hourglass on the dorsal side of its abdomen. However, this is not […]

Latrodectus Hersperus – Western Black Widow

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 […]

Loxosceles reclusa – Brown Recluse

The brown recluse, loxosceles reclusa, is one of the more dangerous spiders indigenous in the United States. While usually not life-threatening, a brown recluse bite might lead to severe skin damage. This page gives an overview of how to identify a brown recluse and in which states in the US it appears. Brown Recluse Description […]

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