This species was first described by Edward Lee Greene in 1906 from a specimen collected by O. B. Metcalfe at Sawyers Peak on September 30, 1904. The Type Specimen (Co-type, Isotype) is shown below. Note that “Sierra” County is crossed out and replaced by “Grant” County. The County line runs along the ridgeline of the Black Range and the trail, more-or-less follows the ridgeline. The individuals shown in these photographs were probably a few feet within Sierra County.