The brown widow, also known as the brown button spider, or more properly, Lactodectrus geometricus, is a venomous spider whose venom remains just as potent as its relative the black widow, or Lactodectrus mactans. It contains a neurotoxin, which affects nerve endings, producing lactodectus, which includes, pain, muscle stiffness, vomitting, and sweating.
L. geometricus bites are statistically less toxic or fatal than bites from L. mactans. Its toxic effects are typically isolated near the bite site, rather than spreading, perhaps because a smaller injection of venom is more likely to occur from L. geometricus.
L. geometricus can be found throughout most of the world, and is thought to have originated in South Africa.
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