What is the life expectancy of a black widow spider?
Southern black widow: 1 – 3 years
Each year 12 bites are considered serious but no deaths have been reported in 100 years. Black widows are not especially aggressive spiders, and they rarely bite humans unless startled or otherwise threatened.
- A widespread myth holds that daddy longlegs, also known as granddaddy longlegs or harvestmen, are the most venomous spiders in the world. We're only safe from their bite, we are told, because their fangs are too small and weak to break through human skin.
- As designated by its name, the northern black widow spider (Latrodectus various) is found primarily in the Northeast United States. They may live as far south as Florida, as far north as Canada and as far west as Texas.
- The brown recluse spider (Loxosceles reclusa) is rumored to be the one of the most poisonous house spiders in the United States. However, although the bite of a brown recluse in rare instances can prove damaging to tissue, a fatality from a brown recluse bite has never been verified.
Sightings of Steatoda nobilis, the false widow spider, are on the rise. It is being cited as Britain's most venomous spider, and it is spreading. But experts say the species is not usually aggressive towards humans and that being bitten is rare.
- Black Widow spiders usually eat small insects such as mosquitoes, grasshoppers, and beetles. They sometimes eat mice, lizards, and snakes caught in the web. In hot dry places Black Widows are “specialist” feeders, living on a diet of scorpions. When a Black Widow spider bites, the venom subdues the prey.
- False Black Widow Spider Diet. Some species of False Black Widow Spiders will actually prey on Black Widow Spiders, as well as other spiders which are considered hazardous to humans. False Black Widow Spiders mainly eat crawling insects, especially isopods (sowbugs and pillbugs).
- Black Widow Spiders. These spiders aren't aggressive and only bite when they feel threatened. The bites usually aren't fatal, but they can still cause some serious and uncomfortable symptoms. If a black widow spider has bitten you, get medical treatment right away.
Updated: 2nd October 2019