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Photo#186174
Caddo agilis - Caddo

Caddo agilis - Caddo
University of New Hampshire, Durham, New Hampshire, USA
May 28, 2008
Size: Body length 1 mm
A possible new page for the guide.
Identified using the internet & Daniel L. Dindal's "Soil Biology Guide" which was borrowed from the campus biology resource library (my heaven on Earth).

Found in small gatherings underneath fallen bark & pieces of rotting wood. They were surprisingly fast & very active, making photographing very difficult. All but this one (of which all the photos are of) fled upon my interruption of whatever they were doing. This guy tried hiding in the cracks of the bark they were under but I easily forced him into the open by gently blowing on him.

I though at first these were the young of one of the large harvestmen that inhabit the are. Then I saw the enormous eyes.

Compare: http://www.americanarachnology.org/AAS_AA.html

Images of this individual: tag all
Caddo agilis - Caddo Caddo agilis - Caddo Caddo agilis - Caddo

Moved
Moved from Caddidae.

Good call, but...
Given your region, it could also be Caddo pepperella or Acropsopilio boopis.

 
Aw shucks!
I was close. :P

How do you tell the difference between these three? Or is it based on morphological details that require a microscope and a dead specimen?

 
pretty much
A good microscope would definitely help, and yes, it's morphological characters, like spines on the palp tibia, small projections on the dorsum, setae on the ovipositor, that sort of thing. Color of the body can be useful, but I'd want a scope, myself, before going beyond the family level with these particular critters.

Moved
Moved from Palpatores.

Please help us help you.
Please outline the higher classification (which order, family...) so we can create a guide page. Thanks.

 
Moved
the images to Palpatores, if that helps at all. :)

 
How?
Species: Caddo agilis
Genus Caddo
Family Caddidae (a close relative to the family Phalangioidea)
Sub-order: Eupnoi
Order: Opiliones

I don't have any real good sources on arachnid taxonomy, so I had to use Wikipedia (I know, people don't view it as a credible source, I've heard it a dozen times before.) and a little guide ("Spiders and Their Kin", a Gold Guide from St. Martin's Press) that only tells the genus & family.
http://en.wikipedia.org/wiki/Caddoidea

According to the Comparative Taxogenomics Database, it should go like this:
Species: Caddo agilis
Genus: Caddo
Family: Caddidea
Super-family: Caddoidea
Sub-order: Palpatores
Order: Opiliones
http://ctd.mdibl.org/detail.go;jsessionid=1B2D664040CE04DDA268C08C408D6931?type=taxon&acc=58141

http://www.david.curtis.care4free.net/opiliotaxa.htm

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