Both of these spiders have glossy black bodies and red markings on them, but male redback spiders are brown, while male black ...

The false widow spiders ... with other markings that vary by species. However, all of these markings can be variable, faded, or missing, especially in adult females. Abdomen shape: Females have ...

The animals most at risk from the black widow's bite are insects—and male black widow spiders. Females sometimes kill and eat their counterparts after mating in a macabre behavior that gave the ...