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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Crab Spiders (Thomisidae) » Bark Crab Spiders (Bassaniana)
Photo#474980
Bark Crab Spider? - Bassaniana
Copyright © 2010 Jim Moore

Bark Crab Spider? - Bassaniana
In Westwood - elevation 5100ft, Lassen County, California, USA
September 23, 2005
Is this possibly a Bark Crab Spider? Thanks for any ID help!
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Contributed by Jim Moore on 24 November, 2010 - 12:20am
Last updated 5 December, 2011 - 5:20pm

Moved
Moved from Crab Spiders.
… john and jane balaban, 5 December, 2011 - 5:20pm login or register to post comments

Coriarachne or Bassaniana)
You're right, this is one of the flat-carapaced Bark Crab Spiders. Two species are known from California, "utahensis" and "brunneipes", and both should occur in Lassen County. The taxonomy is in flux right now between the two genera with some arguing that the"utahensis" should be placed in the genus Bassiana while "brunneipes" should be in Coriarachne. Others feel that the division between the two genera is not significant and that all the North American bark crab spiders should be sunk into Coriarachne. Unfortunately, the features tentatively used to distinguish these genera are not visible in the photo so we should probably just leave it where it is in the stacks until the taxonomy is sorted out.
… R.J. Adams, 25 November, 2010 - 11:51am login or register to post comments

 
Thank you R.J.!
I really appreciate your comments on this spider - and your confirmation that it is a Bark Crab Spider. Perhaps a 'subfamily' will come forth through the review of the two genera.
… Jim Moore, 25 November, 2010 - 12:36pm login or register to post comments

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