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Aug 16, 2021 · Latrodectism is caused by the neurotoxic venom injected by the widow. The severity of a Latrodectus bite varies with the species, the age and health of the victim, and the amount of venom injected into the victim. The most severe bites have been reported to be from the Southern Black Widow ( L. mactans ).
Latrodectus, commonly known as Widow Spiders, is a genus of spiders in the family Theridiidae. Latrodectus spiders have been sighted 220 times by contributing members. Based on collected data, the geographic range for Latrodectus includes 16 countries and 32 states in the United States.
Description. Range. Reproduction. Prey. Natural enemies. Toxicology. References. External links. Latrodectus mactans, known as southern black widow or simply black widow, and the shoe-button spider, [citation needed] is a venomous species of spider in the genus Latrodectus.
Jun 1, 2004 · The spider genus Latrodectus includes the widely known black widows, notorious because of the extreme potency of their neurotoxic venom. The genus has a worldwide distribution and comprises 30 currently recognized species, the phylogenetic relationships of which were previously unknown.
Latrodectus hesperus, the western black widow spider or western widow, is a venomous spider species found in western regions of North America. The female's body is 14–16 mm (1/2 in) in length and is black, often with an hourglass -shaped red mark on the lower abdomen.
The spider genus Latrodectus includes the widely known black widows, notorious because of the extreme potency of their neu-rotoxic venom. The genus has a worldwide distribution and comprises 30 currently recognized species, the phylogenetic relationships of which were previously unknown.
The Southern black widow spider, Latrodectus mactans (Fabricius), is a venomous spider found throughout the southeastern United States. Widow spiders received their name from the belief that they would kill and consume their mate following copulation.
