CLOSED: Neon green spiderlings, with hatchery

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ousiibii split, Croatia Jun 30, 2013

I just discovered this hatchery on the side of the window on the upper floor of my house.
When trying to remove it, a lot of baby spiders fell out of this mud hatchery, as you can see in the lower part of the picture.
There are four 'tubes' that make the hatchery, and the middle two ones had incapacitated and dead bugs whose purpose seems to be food for the... babies.

Sorry everyone, but I had to use Raid on the hatchery and spiders because the threatening toxic color and their numbers scared the living peep out of me :(

I live in a rural area but have never seen spiders like these, especially the ones that will climb an entire floor of a house in order to create a mud hatchery, so I'm interested in finding out if they're something to be worried about.

I'm from the south of Croatia, Europe.

Thanks in advance!

Thumbnail by ousiibii
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Flapdoodle Minot, ND Jun 30, 2013

Two comments:
One: the spiders themselves are completely harmless orb weavers.
Two: The spiders did not make the mud structure, it was their prison where they had been placed by wasps in the family Sphecidae. The wasps lay their eggs on or very near the spiders, which are alive but paralyzed by the wasps' sting, and the wasp larvae feed on the spiders.

Post #9580208
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ousiibii split, Croatia Jun 30, 2013

Thank you for the swift answer, Flapdoodle.

It did seem strange for a spider to use mud. So the issue I'm having is wasps. For some reason, I don't feel any better now. Well, at least I ended the little guys' torment then. Evil wasps >:(

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