Eremobates lapazi species group

Diagnosis:

Muma (1986) erected this group to accommodate a single species, Eremobates lapazi Muma 1986, from the cape region of Baja California Sur, Mexico. He characterized males of the group as having a constriction, but no distinct notch or ectodorsal tooth-like process, at the base of the fixed cheliceral finger when viewed from above, and as having the mesoventral groove of the fixed finger dilated basally (Figure 1). The only known male, he reported, has three apparently normal sword-like ctenidia on the first postspiracular abdominal sternite (Figure 2). Females, he reported, have roughly triangular genital opercula that are adjacent and essentially parallel along most of their mesal margins, undulate along their posterior margins, and provided with a narrow slot-like posteriomesal notch (Figure 4). Muma (1989), in a key to the species groups of Eremobates based on males, characterized males of this group as being large species that have a mesal groove of the fixed cheliceral finger that is mesoventral in position, a fixed cheliceral finger that is straight or at most slightly sinuate in dorsal view and constricted near its base, but without an ectodorsal tooth-like process, and an anterior tooth of movable cheliceral finger that is absent or abortive (Figure 3). In a key to the species groups of Eremobates based on females, Muma (1989) characterized the female genital opercula as being broadly triangular in shape, without distinct pits midway along their ectal margins, and as having their mesal margins parallel anteriorly with their posterior mesal margins sinuate and straight or evenly curved to a narrow or slot-like posteriomesal notch.


Literature accounts:


Muma 1989: 6-7 (key), 13,

(Males) Mesal groove of fixed cheliceral finger mesoventral in position...............................
Mesal groove narrow apically, occupying less than half of finger width................................
Mesal groove distinctly dilated basally...................................................................................
Fixed cheliceral finger in dorsal view straight or at most slightly sinuate..............................
Fixed finger constricted near base but without an ectodorsal tooth-like process.................
Anterior tooth of movable cheliceral finger absent or abortive; large species ............................................................................................................................lapazi group

(Females) Opercula not or only moderately separated posteriorly; broadly triangular in shape and without distinct pits midway along ectal margins except for E. mimbrenus new species...................................................................................................................................
Mesal margins of opercula straight or evenly curved to the posteriomesal notch....
Mesal margins of opercula parallel anteriorly although variously notched posteriorly.......
Posterior mesal margins of opercula sinuate; posteriomesal notch narrow and slot-like .......................................................................................................................... lapazi group



Notes:



Included species


  • Monobasic.   Includes only Eremobates lapazi Muma 1986.

Distribution:


MEXICO: BAJA CALIFORNIA SUR (cape region)


Bibliography:


  • Muma, M. H. 1989. New species and records of Solpugida (Arachnida) from the United States. 60 pp. Privately published for the author by Douglas Print Shop, Douglas, Arizona.