Nogales, Santa Cruz County, Arizona
Coordinates: 31.335667, -110.938163
April 8, 2018
Size: 10 mm
Determined by Jeff Hollenbeck who said “The initial reaction to a major threat such as being removed from protection of web is to play dead, but if pestered further they will flee, or bow up with front legs in air and fangs open. Probably P. tristis.”