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UC Riverside

Spider Research

Department of Entomology

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    • Brown Recluse Spider Map
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    • Myth of the Brown Recluse Fact, Fear, and Loathing
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    • -Former- Brown Recluse Challenge
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    • Causes of Necrotic Wounds other than BRS Bites
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spiderweb2
Spiderweb diffraction (c) Vineeth Mathhew, American Physical Society
spiderweb
spiderweb2
Spiderweb diffraction (c) Vineeth Mathhew, American Physical Society
spiderweb
spiderweb2
September 02, 2022

The Itsy-Bitsy, Repulsive Spider: Yes, There Are Arachnophobic Entomologists

Entomologist Rick Vetter is enjoying his retirement. The extra time allows him to pursue spider research free from the distraction of what he considers the less fascinating six-legged species that most of his colleagues study. Vetter understands that not everyone...
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September 28, 2020

Entomologist gains ignoble distinction

People who research insects for a living are just like us — totally creeped out by spiders. This is the finding of a paper that earned retired UC Riverside spider expert Richard Vetter a 2020 Ig Nobel Award. Rick Vetter...
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May 20, 2019

Brown Recluse Spiders? Not in California!

[Reblog from Pests in the Urban Landscape] If you were to ask an audience of more than a few people if they or anyone they know has ever seen or been bitten by a brown recluse spider in California, many...
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September 02, 2015

Myth of the Brown Recluse: Fact, Fear, and Loathing

This website presents evidence for the lack of brown recluse spiders as part of the Californian spider fauna. Unfortunately, this contradicts what most Californians believe; beliefs that are born out of media-driven hyperbole and erroneous, anxiety-filled public hearsay which is...
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April 22, 2014

Brown Widows Get Foothold in Southern California

https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=13672
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September 02, 2012

Brown Widow Spider

The Situation: The brown widow spider, Latrodectus geometricus, became established in Southern California in early 2000 and has become well entrenched as part of the local spider fauna in urban Los Angeles and San Diego. The brown widow spider is...
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December 15, 2011

The Prevalence of Brown Widow and Black Widow Spiders (Araneae: Theridiidae)

J. Med. Entomol. 49(4): 947Ð951 (2012); DOI: http://dx.doi.org/10.1603/ME11285 ABSTRACT The brown widow spider, Latrodectus geometricus C. L. Koch, has become newly established in southern California during the first decade of the 21st century. Brown widows and egg sacs were collected...
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June 01, 2010

Arthropod Bites & Stings

The article that was previously posted here was written in 1998 and is now outdated. Interested readers should seek out the following articles, which are more current. They are listed by the topics they cover so that you may only...
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University of California, Riverside

900 University Ave.
Riverside, CA 92521

Tel: (951) 827-1012

Spider Research at UCR

165 Entomology Building
Citrus Drive
Riverside, CA 92521

tel: (951) 827-5714
fax: (951) 827-3086
email: entomology@ucr.edu

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AGRICULTURAL SCIENCES

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Olmsted 2300
900 University Ave
Riverside, CA 92521

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