What is this Egg Sac?

August 11, 2020

An egg sac on wood.What type of spider makes this egg sac? I've searched google for an hour including doing a reverse image search but have not found an answer.




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August 11, 20200 found this helpful

The egg sac belongs to a ground spider. It appears when someone collected some of these they decided to try and hatch them. The small spiders that come out of these sacs are blue. The name of the spider this egg sac belongs to is called Zelotes. Here is some information on this from a bug guide and how the person hatched the eggs and what the spiders looks like when they are hatched. Not sure I would hatch this egg sac and have all those spiders living in my yard. They are ground spiders so maybe there are there to eat the red ants in the garden to keep your yard clean. Not sure on this one.

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Bronze Post Medal for All Time! 140 Posts
August 11, 20200 found this helpful

This looks like - Steatoda Triangulose- better known as Triangulate cobweb spider. This spider loves the indoors, but is also a outdoor spider!


Here is more- and some history -

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August 14, 20200 found this helpful

We have some very large spiders in Florida and I've seen large egg sacs but not one quite like this.
Looks like it should have a spider setting on top.
Probably should destroy it as it will most likely have hundreds of babies crawling around if left to hatch.

Sometimes you can post your question and picture to forums and someone who knows their insects usually answers. They usually want to know your location.


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May 30, 20220 found this helpful

This isn't a spider egg sac,I have come across several in different stages and collected many different specimens and cant get anything from entomologist , it's coming out of what ever material it's attached,scan pic zoomed 3 or 4 x you can see several parisites in different stages of development.

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