Diagnosis: "This species not closely related to any other species or group of genus. Males readily distinguished by much broader fixed cheliceral fingers, l ack of pa-l pal scapula and 2· short flattened ctenidia on first post-stigmatic abdominal sternite. Females are distinguished by a smal l, flattened opercular notch and a pair of shallow hollows near the margins of oper cula. Cheliceral patterns also distinctive. " (Muma, 1989, p. 14)
Taxonomy: .
Type Locality: Rock Valley, near Mercury, Nye County, Nevada, USA. (Muma 1989)