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Where In Arizona Are Recluse Spider Species Distributed? Has The Notorious Brown Recluse Species Been Documented In The State?

While the vast majority of documented spider species within the United States do not inflict medically significant bites to humans, the brown recluse is not one of them. The notorious brown recluse spider has not always been categorized as a spider of medical significance, but after years of ignoring well documented cases detailing extremely dangerous, and in some rare cases, fatal physical reactions that had resulted from this spider’s bite, the medical community came together and announced that the brown recluse is, in fact, a threat to human health. However, misinformation concerning the brown recluse and other recluse spider species is still widespread in the US today. For example, entomologists working at state extension offices often receive calls from people who believe that they had sustained a brown recluse bite despite the fact that many of these worried citizens live well outside of the spider’s range. It is not uncommon for some media sources to claim that brown recluse spiders exist with Arizona, but this is not the case. While Arizona is home to multiple recluse species that, in rare cases, have been known to inflict medically significant bites to humans, the brown recluse species does not inhabit the state.

The United States is home to at least 11 recluse spider species, and the brown recluse, L. reclusa, is the most widespread as well as the most dangerous. The brown recluse species is distributed in the midwest and the mid-south with the US. States where the brown recluse can be found include Texas, Louisiana, Mississippi, Arkansas, Missouri, Kansas, Oklahoma and several other neighboring states. Arizona is home to five recluse spider species, two of which, the Arizona brown spider and desert recluse, may inflict medically significant bites to humans, but such incidents are exceptionally rare, and not fully substantiated. Recluse spiders in Arizona dwell in the far southern and far western portions of the state.

Have you ever encountered a recluse spiders species within your home or garage?




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