Type Material

 

            Holotype: “Male holotype from Riverton in Eldorado County, California, July 11, 1952 (W. J. Gertsch), in the American Museum of Natural History” (Muma, 1962, p. 4).

 

            Measurements: Male holotype: Total length, 17.0 mm. Chelicerae, 4.6 mm length; 2.0 mm width. Propeltidium, 2.5 mm length; 3.5 mm width. Palpi, 13.0 mm. First legs, 10.0 mm. Fourth legs, 17.5 mm.

 

            Palpal Description: “scopula of about 80 papillae on basal two-thirds of metatarsus of palpus (fig. 3)” (Muma, 1962, p. 4).

 

            Ctenidia Description: “five short, sublinear ctenidia on first post-spiracular abdominal sternite (fig. 4). One ctenidium appears to be spurious” (Muma, 1962, p. 4).

                        

            Chelicerae Description: “Structure similar to that of E. scopulatus except no mesial tooth on movable finger of chelicerae, process on fixed finger is a rounded lobe that is nearly indistinguishable from a lateral view, and fixed finger is undulate along ventral surface (fig. 2)” (Muma, 1962, p. 4).

 

Diagnosis: “This species runs to the E. tuberculatus (Kraepelin)-E. purpusi (Roewer) couplet in the key to males in Muma (1951, p. 60). It is readily distinguished by the number of abdominal ctenidia (four) and the cheliceral profile” (Muma, 1962, p. 4). 

 

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