This is the Santa Rita Mountains form of Habronattus pugillis. Most of the sky island mountain ranges of southeastern AZ have an isolated population of these spiders in oak woodland at middle elevations, as the dry desert lowlands are unsuitable habitat. Each population is slowly diverging from the others. See here
Anyway, this is a new species for the guide. The habitat was a steep, rocky hillside with scattered oak/juniper.
Contributed by Ben Coulter
on 28 July, 2007 - 6:50pm
Last updated 27 January, 2011 - 12:13am