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Latrodectus variolus
Latrodectus variolus
, the
northern
black widow spider
or
northern widow
, is a medically important spider species of the
Latrodectus
genus in the
Theridiidae
family. The population is closely related to the southern black widow,
Latrodectus mactans
, and the western black widow,
Latrodectus hesperus
, of the genus.
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