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Latrodectus mactans
(redirected from Black widow spider)

   Also found in: Medical, Financial, Encyclopedia, Wikipedia 0.01 sec.
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Noun1.Latrodectus mactans - venomous New World spiderLatrodectus mactans - venomous New World spider; the female is black with an hourglass-shaped red mark on the underside of the abdomen
spider - predatory arachnid with eight legs, two poison fangs, two feelers, and usually two silk-spinning organs at the back end of the body; they spin silk to make cocoons for eggs or traps for prey
genus Latrodectus, Latrodectus - venomous spiders


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The redback is closely related to the notorious black widow spider and differs in appearance only by the absence of a red dorsal stripe.
We now have caterpillars that can harm the respiratory system here in the UK and experts believe it could only be a matter of time before the deadly Black Widow spider invades our shores.
Until World War II, the threads of black widow spiders were used as crosshairs in optical devices, including microscopes and telescopes.
 
 
 
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