The Arachnid Order Solifugae

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PHYLOGENY/TAXONOMY

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

 

 

Eremobates angustus species group

Diagnosis:  Muma (1951) recognized this species group as including two species: Eremobates anugustus Muma 1951 and Eremobates cruzi Muma 1951.  Per his original definition of the group (Muma 1951), males have a constriction but no distinct notch at the base of the fixed finger (Fig. 1) when  viewed from a dorsal aspect, no ectodorsal process (flange) is present, and the mesoventral groove of the fixed finger is not dilated basally (Fig. 2).  Males, he noted, are not usually provided with ctenidia on the first postspiracular abdominal sternite, and females have roughly triangular opercula that are adjacent but are prolonged laterobasally. He reported that both rows of fondal teeth are graded in size I, III, II, IV, although he later (Muma 1986, 1987) suggested that fondal tooth formulae are not valid for genus or group separation, as they are subject to wear, especially by females.  Muma (1986) also added a third species (Eremobates becki Muma 1986) to the group.  Monophyly of the group has  not been tested, and its relationship to other Eremobates species groups as not been established.

Figure 1.  Fixed cheliceral finger of male viewed from dorsal aspect.  Figure 2.  Mesal face of fixed cheliceral finger of male showing mesal groove, which  is not greatly dilated basally.


Included species: 

Eremobates angustus Muma 1951
Eremobates becki Muma 1986
Eremobates cruzi Muma 1951

Distribution: UNITED STATES: Arizona and Texas. Mexico. Chihuahua.

Key to species (males):  

  1. Fondal notch quadrangular, slightly wider than long, only slightly narrower or wider than the fixed finger (Fig. 3); anterior tooth of movable finger low, flattened; metatarsus of palpus with or without scopula....................................................................................................Eremobates becki Muma 1986

Fondal notch triangular in form, distinctly longer than wide, and much wider than the base of the fixed cheliceral finger (Fig. 4); anterior tooth of the movable cheliceral finger distinctly tooth-like;  metatarsus of palpus with or without scopula.....................................................................................2

  1. Metatarsus of palpus without scopula ..................................................Eremobates angustus Muma 1951

Metatarsus of palpus with a scopula of 30 to 40 papillae.......................Eremobates cruzi Muma 1951


 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   
   

 



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