Type Material
Holotype: “Male holotype and female allotype from 2 miles east of Glenwood, Sevier County, Utah, June 30, 1940 (Gertsch and Hook), in the American Museum of Natural History. Paratypes also in the United States National Museum, Museum of Comparative Zo6logy, University of Utah Museum, and Cornell Museum” (Muma, 1951, p. 57).
Measurements: Males: Total length, 18.0 mm to 21.0 mm. Chelicerae, 4.8 – 5.8 mm length; 2.2 – 2.6 mm. width. Propletidium, 2.4 – 2.6 mm length; 3.6 – 4.0 mm width. Palpi 16.0 – 19.0 mm. 1st Legs, 14.0 – 16.0 mm. 4thLegs, 22.0 – 24.0 mm. Holotype, larger measurements.
Females: Total length, 19.0 – 24.0 mm. Chelicerae, 4.6 – 6.2 mm length; 1.8 – 2.4 mm width. Propletidium, 2.0 – 2.4 mm length; 3.6 – 4.4 mm width. Palpi 13.0 – 16.0 mm. 1st Legs, 11.0 – 14.0 mm. 4th Legs, 18.0 – 24.0 mm. Allotype, smaller measurements.
Chelicerae Description: “Fixed finger of chelicerae more slender so that the fondal notch is nearly one and one-half times as wide as the base of the finger” (Muma, 1951, p. 57).
Operculum Description: “Specific differences occur in the opercula of the genital segment of the abdomen. Figure 60 shows the opercula of the allotype, which apparently was taken in copula with the holotype. Other females do not have the opercula widely
separated” (Muma, 1951, p. 57).
Ctenidia Description: “Ctenidia on first post-spiracular sternite of abdomen two in number, but they are fine, hair-like, and scarcely distinguishable from the other setae clothing the abdomen. One specimen from Colorado had one distinct ctenidium and a reduced scopula” (Muma, 1951, p. 57).
Diagnosis: “This species is quite closely related to scaber (Kraepelin) and is more easily separated in the male sex” (Muma, 1951, p. 57).
Other Information:
