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Latrodectism (/ l æ t r ə ˈ d ɛ k t ɪ z əm /) is the illness caused by the bite of Latrodectus spiders (the black widow spider and related species). Pain, muscle rigidity, vomiting , and sweating are the symptoms of latrodectism.
Latrodectus hasselti, the redback spider. The widow spiders (genus Latrodectus), such as the black widow, redback spider, and katipō are spiders that carry a neurotoxic venom [18] which can cause a set of symptoms known as Latrodectism. Widow spiders are large, shiny house spiders with relatively spindly legs and deep, globular abdomens.
Many injuries to humans are due to defensive bites delivered when a spider gets unintentionally squeezed or pinched. The blue mud dauber species, Chalybion californicum, is a wasp that, in western North America, is the primary predator of black widow spiders. [21]
The venom of a black widow spider, however, is a neurotoxin, the CDC says. Therefore, black widow venom causes widespread pain across an area of the body and symptoms that aren't limited to the ...
Bleeding also may occur with a bite. Signs of a bacterial infection due to a spider bite occur infrequently (0.9%). [9] A study of 750 definite spider bites in Australia indicated that 6% of spider bites cause significant effects, the vast majority of these being redback spider bites causing significant pain lasting more than 24 hours. [10]
The black widow gets its name from a particularly gnarly behavior: Males are often killed and eaten by females shortly after mating. A female can live up to a year or more and produce several egg ...
These types of bites are rare, but brown recluse, black widow, and hobo spider bites can be deadly, so if you suspect one bit you, seek medical treatment immediately. You may need antibiotics ...
It is one of six species of Latrodectus found in southern Africa, four of which, including L. indistinctus, are known as black button or black widow spiders. Like all Latrodectus species, L. indistinctus has a neurotoxic venom. It acts on nerve endings, causing the very unpleasant symptoms of latrodectism when humans are bitten. [2]