The Arachnid Order Solifugae



Phylogeny of the Solifugae
Keys to FamiliesFamily Ammotrechidae
Family Ceromidae
Family Daesiidae
Family Eremobatidae





Family Galeodidae
Family Gylippidae
Family Hexisopodidae
Family Karschiidae
Family Melanoblossidae
Family Mummuciidae
Family RhagodidaeFamily Solpugidae
Catalog of the Solifugae





Eremochelis branchi (Muma 1951)

Therobates branchi Muma, 1951: 85-86, figs 142-150Adobe PDF icon; Muma, 1962: 9Adobe PDF icon; Muma, 1963: 1; Punzo, 1998g: figs 4-9a-b.
Eremochelis branchi (Muma): Muma, 1970a: 30; Muma, 1976: 19; Brookhart and Brookhart, 2006: 315-316

HOLOTYPE: United States. California: San Bernardino County - Twentynine Palms, July to August 1945 (Jefferson H. Branch), males (including holotype), females (including allotype).  Deposited in American Museum of Natural History.

Original description
Muma, 1951: 85-86, figs 142-150 (as Therobates branchi)Adobe PDF icon:

males:  Total length, 21.0 to 28.0 mm. 

                            LENGTH             WIDTH
Chelicerae         5.3-7.5 mm          2.2-3.0 mm.
Propeltidium    2.7-3.3                  4.8-5.5
Palpi                   24.0-29.0              -       
1st legs               19.0-23.0              -
4th legs               31.0-36.0              -

        Holotype, larger measurements.
       Coloration in alcohol light to straw yellow, with dusky purplish markings as follows:  eye tubercle dark; abdominal tergites faintly dusky; distal ends of metatarsi and all of tarsi of palpi faintly dusky. Malleoli white.
        Dentition of chelicerae variable but following general pattern shown in figures 142 to 144. Movable finger with a large principal tooth, two widely spaced intermediate teeth,  a small rounded anterior tooth, and an indistinct mesal tooth. Supernumerary intermediate teeth are common. Fixed finger long and narrow, with the ventral margin decidedly undulate. All fondal teeth are distinct from dentate socket margin of movable finger. Fondal notch U-shaped, about as wide as the base of the fixed finger and containing one or more denticules.
        Groove of fixed finger a deep, parallel-sided slot that is mesoventral in position and does not extend to the base of the finger.  Flagellum complex typical of group, with the apical plumose bristle not covering the distal fourth of the mesoventral groove. Mesal setae of movable finger plumose on the proximal half of the finger and simple distally.
         Eye tubercle situated on the anterior margin of propeltidium. Eyes separated by slightly more than one diameter. Propeltidium wider than long by a ratio of 1 to 1.7.
         Metatarsus and tibia of palpus provided below with a double row of long, robust spines, with long, heavy, cylinder bristles below and small fine ones above. Metatarsus with a scopula of 40 to 50 widely spaced, rounded papillae on the mesoventral surface which extends nearly the entire length of the segment. Metatarsus of palpus about three and one-half times as long as tarsus.
          First post-spiracular abdominal sternite provided with four long, linear ctenidia that extend over the anterior margin of the next segment.

FEMALES: Total length, 24.0 to 26.0 mm.

                            LENGTH         WIDTH
Chelicerae         6.4-6.7 mm      2.4-2.5 mm.
Propeltidium    2.7-3.0              4.4-4.8
Palpi                   22.0-23.0          -             
1st legs               16.0-17.0          -
4th legs              28.0-29.0          -

        Female allotype, larger measurements.
        Coloration in alcohol similar to that of males.
        Dentition of chelicerae as shown in figures 147 and 148. Movable finger with principal tooth large, two widely spaced intermediate teeth, anterior tooth about two-thirds as large as principal tooth, an uneven serration in front of anterior tooth, and an indistinct mesal tooth. Fixed finger with principal and medial teeth equally large, a smaller anterior tooth, two intermediate teeth between principal and medial teeth, two between medial and anterior teeth, and an uneven serration in front of anterior tooth. Supernumerary teeth are common, especially on movable finger. Fondal teeth same as in male.
         Structure similar to that of male except there is no scopula on the metatarsus of the palpus, and no distinct ctenidia on the first post-spiracular abdominal sternite. Some specimens have four trace ctenidia that are scarcely distinguishable from setae clothing the abdomen.
         Opercula of genital segment as shown in figure 150.

PUBLISHED RECORDS: United States. Nevada: Clark County - Las Vegas, summer 1932 (John Christensen and J. W. Lugden), 2 females [Repository not identified]






































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