Type Material

 

            Holotype: “Male holotype at night lights, Child’s Ranch, 4.5 mi. south of Ajo, Arizona along Highway 85, June 3, 1975, and female allotype at night lights, 1.2 miles north of Organ Pipe National Monument along Highway 85, June 3, 1975, J. O. Brookhart and M. H. Muma, both deposited in FSCA” (Muma & Brookhart, 1988, p. 19). 

 

            Measurements: “Males (6) somewhat variable in size; CP varies from 9.5-12.8 (mean 10.9). Legs long; A/CP varies from 6.4-7.2 (mean 6.9). Fondal notch slightly longer than wide with length/width ration varying from 1.1-1.5 (mean 1.4) (fig. 55). No ctenidia. Mesal tooth on movable cheliceral finger varies from medium sized to large with mode medium sized” (Muma & Brookhart, 1988, p. 21). 

“Female (6) also somewhat variable in size; CP varies from 10.8-13.0 (mean 11.88). Legs short; A/CP varies from 5.6-5.9 (mean 5.7). Mesal tooth on movable cheliceral finger varies from small to medium sized with mode medium sized (figs. 56-57). Opercula 1.5 times wider than long; opercula notch occupies 29-38% of the opercula (mean 33) (fig. 58)” (Muma & Brookhart, 1988, p. 21).

            

            Operculum Description: “Females distinguished by mesally undulate of anterior lobes of opercula, and anteriorly concave and posteriorly convex lateral margins of small posterior opercular notch. Vulvular opening located essentially at posterior end of opercular area” (Muma & Brookhart, 1988, p. 19).

            

            Chelicerae Description: “Males distinguish by tiny triangular dorsal-ectal spur on fixed cheliceral finger; irregular rounded or indistinctly lobed anterior process on movable cheliceral finger… Dorsal process of fixed cheliceral finger peaked over distal end of fondal notch” (Muma & Brookhart, 1988, p. 19).

 

Diagnosis:

 

Other Information: “This species and bixleri are either very closely related or synonymous; until more specimens of the latter are available for study we maintain them separately” (Muma & Brookhart, 1988, p. 21).