Brown Widow Spider Bites
Latrodectus geometricus
Brown Widow Spider: Overview | Brown Widow Spider Bites | Prevention
Health and Medical Disclaimer
Underside of brown widow spider, showing hourglass marking.
Wikimedia Commons, Mfield, Matthew Field,
http://www.photography.mattfield.com, Sept 2009, Los Angeles,CA
The Bite of a Brown Widow Is Venomous
The female brown widow is a venomous spider that injects a neurotoxic venom when it bites its prey. The males do not bite. Experts disagree on the potency of the brown widow spider's venom, with some saying it is more potent than a black widow's and some offering the opposite point of view. The consensus is however, that it is more timid and injects less venom than the black widow spider.
Bites occur usually through accidental contact and pressing of the spider against the skin. Symptoms of a brown widow spider bite include a red mark at the bite site and some pain locally. The bite is not usually life threatening, and is considered less serious than a black widow spider bite.
Differences between Black Widows and Brown Widows:
- The color of the brown widow spider is tan to brown or gray vs. black.
- The egg sac of a brown widow has tiny spikes all over the surface; a black widow's egg sac is smooth.
- Brown widows produce more eggs and offspring than black widows.
- A brown widow's bite is usually less severe than a black widow bite as they tend to inject less venom.
Brown Widow Spider: Overview | Brown Widow Spider Bites | Prevention
Health and Medical Disclaimer
See also: Black Widow Spider, Brown Recluse Spider
The information provided on this web site and by this web site through content provided by Authors or third party providers, and in other sources to which it refers, is PROVIDED FOR INFORMATIONAL PURPOSES ONLY and should not be used to diagnose or treat a health problem or disease.
Information provided at and by DesertUSA is NOT A SUBSTITUTE FOR PROFESSIONAL MEDICAL CARE. If you have a medical concern, or suspect you have a health problem you should consult your primary doctor or specialist.
If you cannot agree to this Health and Medical Disclaimer, you are not permitted to use this web site and should exit immediately.
DesertUSA Newsletter -- We send articles on hiking, camping and places to explore, as well as animals, wildflower reports, plant information and much more. Sign up now. (It's free.)
| THE DESERT ENVIRONMENT | |||
| The North American Deserts | |||
| Chihuahuan Desert | Great Basin Desert | Mojave Desert | Sonoran Desert |
| Glossary of Desert & Geological Terms | |||
Animals - Wildlife | Wildflowers-Plants | Minerals - Geology | Desert People
SEARCH THIS SITE

The Saguaro Video
The Saguaro often begins life in the shelter of a "nurse" tree or shrub which can provide a shaded, moister habitat for the germination of life. The Saguaro grows very slowly -- perhaps an inch a year -- but to a great height, 15 to 50 feet.
Desert Food Chain Video
A food chain constitutes a complex network of organisms, from plants to animals, through which energy, derived from the sun, flows in the form of organic matter and dissipates in the form of waste heat.
Prickly pear cactus Video
Prickly pear cactus are found in all of the deserts of the American Southwest. Most prickly pears have large spines on their stems and vary in height from less than a foot to 6 or 7 feet.
Click here to see current desert temperatures!
DesertUSA is a comprehensive resource about the North American deserts and Southwest destinations. Learn about desert biomes while you discover how desert plants and animals learn to adapt to the harsh desert environment. Find travel information about national parks, state parks, BLM land, and Southwest cities and towns located in or near the desert regions of the United States. Access maps and information about the Sonoran Desert, Mojave Desert, Great Basin Desert, and Chihuahuan Desert.



