THE BLACK WIDOW SPIDER is active when the temperature is 70 degrees or higher, but can survive lower temperatures with the right conditions. The black widow spider spins irregular webs, which is built at night near ground level. Once complete, these spiders hang upside-down in their webs.
Bites will only cause localized pain, however, if a substantial amount of venom is injected it leads to pain, muscle rigidity, vomiting, and sweatinglasting 3 to 5 days. Read More