Where Are Black Widows Found. The black widow Latrodectus mactans inhabits the southern half of the country. In North America the black widows commonly known as southern Latrodectus mactans western Latrodectus hesperus and northern Latrodectus variolus are found in the United States as well as parts of southern Canada particularly in the Okanagan Valley of British Columbia as can the grey or brown widow spiders Latrodectus geometricus and the red.
Most common in northern states such as Illinois is the northern black widow L. Black widows are native to the US. Black widow spider bite symptoms include.
Help identify this spider.
Both species look very similar. Black widow spiders spin messy irregular webs near ground level. The Western black widow can make its web in dry deserts or high mountains in addition to the normal black widow spider habitats listed above. Pick-uppath Getty Images Widow spiders genus Latrodectus are found in North America Africa and Australia but the black widow with the hourglass markings Latrodectus mactans or southern black widow is only found in the southeastern United States from Ohio to Texas and in Hawaii.
