Is a false black widow spider poisonous?
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.
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.
- Their range in the United States is from Massachusetts to Florida, west to Texas, Oklahoma, Kansas, and California. They are most common in the southern states. Western Black Widows (Latrodectus hesperus) live in western Canada, the Pacific Northwest of the United States, and Mexico.
- 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.
- A black widow spider bite is said to feel like a pinprick, although victims may not realize that they have been bitten. Sometimes double fang marks may be seen at the location of the bite. The most common localized symptoms of a black widow spider bite include: Immediate pain.
Southern black widow: 1 – 3 years
- A black widow is a spider. The female actually kills the male after he's done his job (fertilized her eggs). A man calling a woman a black widow means he thinks she uses men to her advantage and discards of them when she's done.
- Male black widows are not black, but brown or gray with small red spots. Black widows are poisonous arachnids—animals that have a skeleton outside their body, a segmented body, and eight jointed legs.
- Black widow spiders reproduce sexually when the male inserts his palpal bulbs into the female's spermathecal openings. The female deposits her eggs in a globular silken container in which they remain camouflaged and guarded. The female may eat the male after mating.
Updated: 8th September 2018