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Home » Guide » Arthropods (Arthropoda) » Chelicerates (Chelicerata) » Arachnids (Arachnida) » Spiders (Araneae) » True Spiders (Araneomorphae) » Entelegynae » Wolf Spiders (Lycosidae) » Arctosa » Arctosa littoralis
Photo#359258
Wolf spider - Arctosa littoralis
Copyright © 2009 Lynn Monroe

Wolf spider - Arctosa littoralis
Anz-Borrego Desert State Park, San Diego County, California, USA
March 4, 2006
Size: 10 mm including chelicera
This spider was along the edge of the creek under a rock in about 1/4 inch of water in Borrego Palm Canyon. Another spider appeared out of nowhere and jumped on him. In the second photo I will post, this spider is underneath. Both spiders seem to have the eye pattern of a wolf spider. Any help with family and genus will be much appreciated.

Update: this image, the first in the series, was taken at 12:04 pm

Images of this individual: tag all
Wolf spider - Arctosa littoralis Wolf spider - Arctosa littoralis Wolf spider - Arctosa littoralis
tag · login or register to post comments
Contributed by Lynn Monroe on 17 December, 2009 - 6:22pm
Last updated 20 February, 2011 - 6:12pm

Moved
Moved from Arctosa littoralis.
… Lynette Elliott, 20 February, 2011 - 6:17pm login or register to post comments

Moved
Moved from Wolf Spiders.
… Lynette Elliott, 20 February, 2011 - 6:11pm login or register to post comments

Moved
Moved from ID Request.
… Tim Loh, 17 December, 2009 - 8:29pm login or register to post comments

Yes, Lycosidae
and what a beauty!
… john and jane balaban, 17 December, 2009 - 6:26pm login or register to post comments

 
Lycosidae
Thanks so much, John and Jane, for identification to family. Aren't some of these spiders beautiful!
… Lynn Monroe, 17 December, 2009 - 9:50pm login or register to post comments

 
Arctosa littoralis?
It reminds me of Arctosa and littoralis is the only species listed on Steve Lew's spiders of CA.
… Lynette Elliott, 17 December, 2009 - 8:09pm login or register to post comments

 
Arctosa littoralis
"Mottled legs and abdomen are typical of members of this genus and species.The watery habitat also speaks of that spider. Your other identifiers are probably correct."

Comment and ID by C. Dondale
… Lynn Monroe, 14 January, 2010 - 4:51pm login or register to post comments

 
Arctosa littoralis
Probably Arctosa littoralis

ID by C. Dondale
… Lynn Monroe, 14 January, 2010 - 4:40pm login or register to post comments

 
note change in size
from about 6 mm body length to about 10.25 mm body length. Does this make a difference with Arctosa and littoralis?
… Lynn Monroe, 17 December, 2009 - 10:00pm login or register to post comments

 
Arctosa littoralis?
Thanks for the tip, Lynette. We'll definitely check out this genus/species!
… Lynn Monroe, 17 December, 2009 - 9:51pm login or register to post comments

 
Check Pardosa, too
Check the genus Pardosa, too, as rocky streambeds are more typical habitat for Pardosa. Pretty sure Arctosa has more of a beach/dune habitat preference.
… Eric R. Eaton, 18 December, 2009 - 10:09am login or register to post comments

 
Pardosa a possibility
Thanks, Eric, for mentioning the watery habitat. That spring on every hike up this major canyon, we saw several spiders that are similar to these two, always on or under rocks in shallow water along the creek
… Lynn Monroe, 18 December, 2009 - 4:12pm login or register to post comments

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