Do Spiders Come From Eggs?

The answer to the question, “Do spiders come from eggs?” depends on the species. For most spiders, eggs are deposited in a silken egg sac. These sacs help protect the eggs from predators and changing temperatures. Some female spiders may even guard the sac until the spiderlings hatch.

Egg sacs can be found in various sizes. Depending on the species, these sacs are spherical, cylindrical, tear drop-shaped, or rectangular. They may have different colors. Generally, the egg sac is white or cream colored. It may have small spiky bumps or ridges.

Some species carry the egg sacs in their jaws. Others suspend the sac in a web. Depending on the species, some egg sacs can be found under bark, on trees, inside burrows, or among foliage.

Male spiders may seek out females in order to mate with them. Females then lay their eggs in the sac. Once the eggs are laid, the female will contract her body to make a silk ‘blanket’ around the eggs. This blanket is then hung in a safe location.

Many spiders use silk threads to form a web. In addition, some species emit sounds. A few species produce venom that can be hazardous to humans.

Adult spiders can live up to a year. Most of them will undergo four to twelve molts, before becoming fully mature. By a year, they will have accumulated enough experience to create a home for their young.

Spiders are able to enter our homes through cracks in walls, through window frames, and through used furniture. Although some species are venomous, most arachnids are harmless.