Type Material

 

Holotype: “Female holotype from 13 mi. W of Winterhaven, California on May 23, 1956 by V. Roth in AMNH” (Muma, 1989, p. 25).

 

Measurements: Female holotype: Total, 14.0 mm length. Chelicera, 3.9 mm length; 1.6 mm width. Propeltidium, 1.8 mm length; 3.0 mm width. Palpus, 11.0 mm length; CL/CW=2.43. Leg I, 8.0 mm length; PW/PL=1.67. Leg IV, 14.0 mm length; A/CP=5.79. CP=5.7.

 

Chelicerae Description: “No mesal tooth and fondal teeth graded in size III, I, II, IV for both rows” (Muma, 1989, p. 25).

 

Palpal Description: “Spine-like setae on palpi long but too slender to be counted accurately” (Muma, 1989, p. 25).

 

Ctenidia Description: “Two widely spaced trace ctenidia on first post-spiracular abdominal sternite” (Muma, 1989, p. 25).

 

Diagnosis: “Small species and has shortest, most wide spread opercula of group. Lacks the posteriomedian elevations of iviei and malkini. Approaches insignitis in size but is much paler. When more specimens are available or sexes have been collected together, may prove to be female of medialis” (Muma, 1989, p. 25).

Other Information: “Only one primary seta and 3 very slender minor setae could be found in ECCS of holotype, under normal light and 140x” (Muma, 1989, P. 25).