Black Widow Spider common name of Latrodectus genus, it contain 31 recognized species. Latrodectus genus have six common species in UK, US and Canada. Black Widow Spider known as most venomous spider in the world. According to study female black spider widow venom fifteen times stronger than rattlesnake. Black widow spider bite human & release neurotoxin poison. Male widow Spider are smaller in size and rarely bite humans

Black Widow spider average lifespan 1–3 years. Black Widow spider common name due to strong belief that female widow spider eat male after mating. But it’s not happened generally. Latrodectus genus broadly distributed and contain 31 species and commonly found in North America. Common species — Brown Widow Spider, Red Widow Spider, Western, Northern & Southern black widow spiders. Their venom cause muscle spasm, nausea, breathing problem, back pain, headache and vomiting.