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Photo#399663
Egg Sac

Egg Sac
Norfolk, Virginia, USA
May 19, 2010
Size: 3-3.5mm (sac)
Found on underside of an oak leaf. What kind of spider produced this beauty? Curiosity has gotten the better of me and I have it out in my workshop in a large container to see what emerges.

Images of this individual: tag all
Egg Sac Egg Sac

Moved
Moved from Theridiosoma.
I guess so, just to play it safe.

I'm not sure about this one
Every T. gemmosum egg sac I've seen, and all the others in the guide, are pretty much spherical and have a distinct seam at the top where the egg sac will open when the spiderlings emerge. This one is elliptical and doesn't have the seam. I wonder what T. savannum egg sacs look like...

 
thanks
Do you think we should move this to unidentified egg sacs?

I was reading this morning and found this comment ...

This genus has an obvious relationship with Epeirotypus
0. P. Cambridge, and the discovery of intermediates could easily
bridge the gap apparently separating them. The females of
Epeirotypus have the cephalon elevated above the ocular node,
or even sharply crested (see fig. 35). The epigynum entirely
lacks the scape, its place being taken by a transverse hood. In
the male the median apophysis of the palpus is bifurcated but
not projecting (fig. 36). In both genera the legs are relatively
short. The web made by this genus is triangular according to an
available description, while that of Colphepeira is of the regular
orb type. In the case of the latter the egg sac consists of a mass
of eggs covered with fragments of bark, while in Epeirotypus
it is described as being a regular ootheca on the end of a stalk.

From: http://digitallibrary.amnh.org/dspace/bitstream/2246/4928/1/N1622.pdf

I haven't had time to follow up on the info very much, but it doesn't appear we have any of those spider in the US.

Moved
Moved from Spiders.

Moved
Moved from ID Request.

Not an ID
but images like it in Theridiosoma gemmosum

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