Black Widows live everywhere in America but not in Alaska. You may be asking why they don't live there because it;s to cooled for them.
Female Black Widows are shiny. Female Black Widows are 1.3cm long males are half that size.
This bug eats flies, mosquitoes,grasshopers,or other spiders.
Black Widows use fangs full of poison to defend them self's from birds and other spiders.
Black widows are the most dangers es spiders in America. Soft parts of the spiders on the spiders body are covered with exoskeleton.