Type Material

 

Holotype: “Male holotype, female allotype, and male paratype from Andreas Canyon, Riverside County, California, April 24, 1954 (J. G. Rozen), in the American Museum of Natural History. Make paratypes at the University of California” (Muma, 1962, p. 21).

 

Measurements: Males: Total, 13.0-16.0 mm length. Chelicera, 3.0-3.7 mm length; 1.2-1.5 mm width. Propeltidium, 1.5-1.7 mm length; 2.3-2.8 mm width. Palpi, 13.0-16.0 mm length. Leg I, 9.5-12.0 mm length. Leg IV, 15.5-20.5 mm length. Holotype, larger. Female allotype: Total, 20.0 mm length. Chelicera, 5.6 mm length, 2.0 mm width. Propeltidium, 2.3 mm length, 3.8 mm width. Palpi, 13.0 mm length. Leg I, 17.0 mm length. Leg IV, fragmented.

 

Chelicerae Description: “Dentition of chelicerae somewhat variable but following general pattern of figures 20 and 21. Movable finger with principal tooth large; two minute intermediate teeth located on and at base of principal tooth; anterior tooth replaced by a rounded elevation, margin of which armed with nodules forming the dorso-ectal edge of mesial groove at tip of finger; mesial tooth absent. Fondle notch obscure, somewhat narrower than width of fixed finger and bearing two or three denticules. Fixed finger gradually tapered from base to tip which is slightly hooked down-ward; ventral margin of finger bearing aborted teeth which give it a dentate profile. Mesoventral groove of fixed finger distinct apically but indistinct basally, apparently extending three-fourths of length of finger” (Muma, 1962, p. 20).

 

Chelicerae Setae Description: “Flagellum complex consisting of dorsal row of striate bristles, mesial row of plumose bristles that become striate aoucally, and basal group of tubular bristles. Mesial plumose bristles of movable finger extending nearly to apical end of articulation area” (Muma, 1962, p. 20).

 

Palpal Description: “Metatarsus, tarsus, and tibia of palpus sparsely provided with large cylinder bristles below and short fine ones above, as well as usual long, slender spines. Metatarsus of palpus without scopula and about four times as long as tarsus” (Muma, 1962, p. 20).

 

Ctenidia Description: “First post-spiracular abdominal sternite provided with two long slender ctenidia that extend well beyond anterior margin of succeeding sternite (fig. 22)” (Muma, 1962, p. 20).

 

Diagnosis: “Although this species is described as typical of the group, it probably represents one extreme of the intra-group variation, with the following species representing the other extreme. The shallow mesial groove on the movable finger, hooked fixed finger, and two very long abdominal ctenidia distinguish this species from all other species in the genus Therobates Muma” (Muma, 1962, p. 18-20).

Other Information: Therobates now synonymous with Eremochelis.