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Photo#334325
spider - Araneus thaddeus

spider - Araneus thaddeus
Cross Plains, Dane County, Wisconsin, USA
September 16, 2009
Size: ~9mm

Images of this individual: tag all
spider - Araneus thaddeus spider - Araneus thaddeus spider - Araneus thaddeus spider - Araneus thaddeus

Moved
Moved from Araneus.

Our first thought is A. thaddeus
Was this small for Araneus? Did she live in a little lattice hole tucked into one corner of her web??

 
It has that puffy Chiclet loo
It has that puffy Chiclet look, doesn't it. I wonder what else might be possible (trying to pick Lynette's mind, here). I also wonder if the strong dorsal/ventral contrast is significant (we know how much color variation is possible in Araneus).

-K

 
Spiders of Wisconsin
Araneus diademus, Araneus dumetorum, Araneus foliatus, Araneus gigas-listed as A.bicentenarius, Araneus raji, Araneus sachimau, Araneus sericatrus, Araneus solitarius, Araneus triguttatus-may be erroneuous record. Information from here.

The bold spiders I've never even seen, so not sure what else is possible. I'm not sure how much to trust that site. Why A. diademus instead of diadematus Why are they using such weird names? I guess just outdated?

 
You were looking at the conco
You were looking at the concordance of "all species names and genus-species name combinations employed in the referenced species lists (Literature cited)". So I imagine that this includes no longer valid names that are found in older literature.

Aranea raji, for example, is used in a couple articles from 1943. See The World Spider Catalog database (http://research.amnh.org/oonopidae/catalog/) for more.

However, I do not find "Araneus diademus" -- perhaps a typo?

-Kevin

 
A view of the ventral aspect
A view of the ventral aspect of the abdomen would be helpful.

-K

[Maybe instead of Chiclet, "flattened-gum drop"?]

 
ventral aspect of spider
I neglected to take a photo of the ventral view.

 
spider
It was a fairly large spider -- around 9mm. I didn't see the web since it was caught in a sweep of some underbrush. I looked at the other photos of A. thaddeus and my spider does look similar.

 
6.2 mm
is the measurement given in The Insects and Arachnids of Canada Part 23. Did you actualy measure it or just estimate? There is easily an error of 3 mm with estimating.

 
spider size
I used the 5mm squares under the spider in the third photo as a measurement guide. The length would be less if the spider was hunched up with the abdomen over the carapace.

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