A black widow spider’s eggs are encased inside a silken sac, sometimes pear-shaped or globular. This construction is normally off-white to tan in coloration. The scale of the egg sac varies, nevertheless it’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 fee for the spiderlings. That is essential as a result of it shields the eggs from predators, environmental components, and desiccation. Traditionally, the presence of those egg sacs close to human dwellings is some extent of concern as a result of venomous nature of the black widow spider.