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Brown ("Recluse") Spider (Loxosceles spp)
brown (recluse) spider

 

 

DESCRIPTION: L= 0.75" (19mm).  All brown with difficult-to-see, violen-shaped marking right behind eyes. Brown Spiders have only 6 eyes (unlike most spiders which have 8), and the eyes are arranged in three pairs (see Vetter 1999 for more information).brown spider bite
NATURAL HISTORY: Dangerously Venomous (potentially fatal -- when stung, call the
Arizona Poison and Drug Information Center at 626-6016 in Tucson and 1-800-362-0101 elsewhere in Arizona.). The venom generally causes a sore that enlarges over time (see picture to right) and may cause permanent tissue damage (and possible death) if not treated by a physician (see Vetter and Visscher 1998 for more information). Brown spiders use irregular webs built underneath rocks and debris to catch their arthropod and other invertebrate prey.
Click on thumbnails below for another image
s.

brown spider with ruler close up of head showing 3 pairs of eyes