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Photo#478671
dark spider on tree - Coriarachne brunneipes

dark spider on tree - Coriarachne brunneipes
Ottawa, Mud Lake, Britannia Conservation Area, Ontario, Canada
May 20, 2010
It may be pretty difficult to identify this spider that was climbing up the side of a tree. Every time I got close with the macro lens, it got spooked and hid in the deep vertical crevices in the bark. Visually, the spider looked almost black. This image is slightly rotated for easier viewing and I brightened it a lot.

Images of this individual: tag all
dark spider on tree - Coriarachne brunneipes dark spider on tree - Coriarachne brunneipes

Moved
Moved from Coriarachne.

Are we using Coriarachne
in the broad sense here? We thought the current thinking was that there is only one species of Coriarachne, the rest were moved to Bassaniana. And we'll have to check, but we thought the one species that was left in Coriarachne would not be found as far east as Ottawa??

 
..
I was going by the most recent Canada Spider Checklist, published in May of last year. It lists three species of Coriarachne for Ontario: C. brunneipes, C. utahensis, and C. versicolor.

I see, though, that the World Spider Catalog lists utahensis and versicolor under the Bassaniana genus.

Moved
Moved from Spiders. From Rod Crawford: I'd concur with Coriarachne. You can see several spines clearly enough to eliminate Bassaniana the main other possibility (they are sharp, not truncate).

..
Hi, Doug,

This is a male crab spider in the genus Coriarachne. There are three species in Ontario, but I don't know which one this might be. They are difficult to identify without examining the palps.

 
Coriarachne
Thanks very much.

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