Indoor spiders take a similar mentality when choosing where to lay their eggs, keeping in mind places that are dark, secluded, and dry.Ĭhimneys and attics do nicely, or even a simple webbing in a dark corner works as well to lay their eggs. Even just covering the egg sac with more silk lends extra obscurity. Outdoor spiders will use numerous places for their hiding spots, such as attaching the wrapped egg sac to a leaf, setting it under rocks, hanging it from a web or tree, etc. Of course, where the mother chooses to keep her eggs depends on that species’ natural environment. Of course, we now know that female spiders take careful precautions when it comes to protecting their egg sacs from harm (both from predators and weather).īut, when it comes to deciding where to lay her eggs, the mother spider takes an added step of security. Otherwise, the simple answer to this question is all year round. The time at which spiders will lay their eggs depends on what kind of spider it is.įor example, the hobo spider will lay her eggs between the months of September-October, whereas the brown recluse will lay her eggs between May-June. Cellar spider: between 13 and 60 for long-bodied, and between 10 and 27 for short-bodied cellar spiders.Īs you can see, the range varies widely from species to species when it comes to the number of eggs laid.The amount of eggs within a sac varies depending on the species.Ī general estimate would be between 2 and 1,000 eggs, and some spiders are even capable of laying up to 20 egg sacs in their span of life.īelow is a brief list of several different spider species, relaying how many eggs they typically lay: With that being said, spiders will either lay one egg sac containing as many as 1,000 eggs or will lay several egg sacs with fewer eggs in each. The more egg sacs laid the better chance of survival for the unborn spiderlings. (Think of it like the womb or even the amniotic fluid around an unborn human baby: it is the barrier to the outside while being safe enough to develop within.) How Many Eggs do Spiders Lay? This protective silky coating is also referred to as the “clutch”. The reason behind wrapping up the egg sacs in silk is pretty straightforward: for protection against both predators and the elements. Sometimes, the spider egg sacs are bound together by silk strands, but mostly they are just individually engulfed within silk. She places the egg sac on top of that, then creates another silken layer – or “blanket” – to wrap around it, and finishes it off with an extra bit of silk for even more disguise and protection. She creates a kind of foundation – or what is described as a “bed” – with her silk. When the female is ready, she first fertilizes her eggs and then follows with the meticulous process of laying them. How Do Spiders lay Eggs?įor the most part, the process of how spiders lay eggs is similar across the board. In this article, we’re going to discuss all things you might be wondering now that you know that spiders actually do lay eggs.īut keep your eye out: if you’ve found what you suspect to be spider eggs, just know you may very well come across the mother next since they oftentimes keep close by to ward off danger to their unborn babies. How does this reproduction come about, you ask? Spiders, just like any other animal, have their own process for reproducing.īelieve it or not, female spiders can actually be quite maternal and caring for their young, despite their often frightening reputation of eating other spiders or even eating their own babies.
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