Thanatus formicinus Philodromidae
Missoula, MT
May 13, 2014
Robert Niese
Thanatus formicinus literally translates to “ant-like death spider.” Fortunately, these large, agile spiders do not live up to their names and are completely incapable of killing anything larger than a nickel. Look for them along dry, rocky river beds or open talus slopes.
Northwest Naturalist 