Black Widow Spider
Source: U.S. National Park Service. Available online: http://www.nps.gov Black widow spiders (Latrodectus mactans) are found throughout the United States. Female black widows are long-legged, shiny, coal-black spiders with an orange, red, or yellow hourglass shape on their underside. Female black widows are usually about 1.5 in. (3.8 cm) across but may be smaller.
eMedicineHealth Medical Reference from Healthwise 
This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions. To learn more visit Healthwise.org © 1995-2012 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. |
Women's Health
Find out what women really need.
From WebMD
Featured Centers
Health Solutions From Our Sponsors
Featured Topics
Most Popular Topics
Medical Dictionary
Pill Identifier on RxList
- quick, easy,
pill identification
Find a Local Pharmacy
- including 24 hour, pharmacies
