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Female widow spiders are typically dark brown or a shiny black in colour when they are full grown, usually exhibiting a red or orange hourglass on the ventral surface (underside) of the abdomen; some may have a pair of red spots or have no marking at all.
The Black Widow spider (Latrodectus spp.) is a spider notorious for its neurotoxic venom (a toxin that acts specifically on nerve cells). The Black Widow Spider is a large widow spider found throughout the world and commonly associated with urban habitats or agricultural areas.
23 de jun. de 2024 · Black widow, any of about 30 species of black spiders distinguished by an hourglass-shaped marking on the abdomen. Black widows are found throughout much of the world. Although their venomous bite often produces muscle pain, nausea, and mild paralysis of the diaphragm, it is rarely fatal.
- The Editors of Encyclopaedia Britannica
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. The females are well known for their distinctive black and red coloring and for the fact that they will occasionally eat their mates after reproduction.
14 de may. de 2021 · Black widows are notorious spiders identified by the colored, hourglass-shaped mark on their abdomens. Several species answer to the name, and they are found in temperate regions around the...
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The black widow spider is an arachnid that strikes fear into the hearts of many. They can be found on almost every continent (with the exception of Antarctica) and like to reside in areas that are warm, dark, and secluded.
Descripción. Un ejemplar de Latrodectus mactans. La hembra mide hasta unos 50 milímetros con las patas extendidas. Es de color negro carbón brillante y posee una mancha de color rojo en forma de reloj de arena en la cara inferior del abdomen. El macho mide 12 mm y pesa treinta veces menos.
