A black widow spider’s eggs are encased inside a silken sac, usually pear-shaped or globular. This construction is normally off-white to tan in shade. The scale of the egg sac varies, but it surely’s typically round inch in diameter. The sac supplies safety for the growing eggs till they hatch.
The protecting egg sac ensures the next survival price for the spiderlings. That is essential as a result of it shields the eggs from predators, environmental parts, and desiccation. Traditionally, the presence of those egg sacs close to human dwellings is a degree of concern because of the venomous nature of the black widow spider.