Caddo agilis

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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Harvestmen (Opiliones) » Eupnoi » Caddoidea » Caddidae » Caddo » Caddo agilis

Photo#186174

Copyright © 2008 Jonas Insinga

Caddo agilis

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

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Contributed by Jonas Insinga on 29 May, 2008 - 8:15pm
Last updated 25 October, 2014 - 5:57pm

Moved

Moved from Caddo.

… john and jane balaban, 25 October, 2014 - 5:57pm

This is Caddo agilis. Caddo pepperella lacks this distinctive coloration of the adult C. agilis. Acropsopilio is MUCH smaller and has very short legs.

… Jeffrey W. Shultz, 25 October, 2014 - 4:48pm

Moved

Moved from Caddidae.

… marshal hedin, 26 February, 2009 - 9:33pm

Good call, but...

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

… Charles D. R. Stephen, 20 February, 2009 - 9:48am

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?

… Jonas Insinga, 24 February, 2009 - 1:35pm

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.

… Charles D. R. Stephen, 24 February, 2009 - 5:45pm

Moved

Moved from Palpatores.

… Charles D. R. Stephen, 20 February, 2009 - 9:44am

Please help us help you.

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

… Eric R. Eaton, 31 May, 2008 - 12:33pm

Moved

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

… Jonas Insinga, 31 May, 2008 - 2:03pm

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

… Jonas Insinga, 31 May, 2008 - 1:47pm

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