Genus Eremothera Muma 1951

Eremothera Muma, 1951: 82; Muma, 1970a: 29; Muma, 1976: 18; Muma, 1986: 9–10; Muma, 1987: 10; Muma 1989: 3 (key), 15.


Type species:

Eremothera sculpturata Muma 1951


Ectal view of chelicera of male Eremothera sculpturata Muma from Arizona.


Diagnosis:

Eremobatine species in which the fixed cheliceral finger of the male is shortened and bears pronounced ectal and mesal flanges on the dorsal surface, producing a shovel-like appearance

(see above).

 

Original description:

Muma 1951: 41, 82:

"Moderate-sized Eremobatinae. Fixed finger of males a flanged, shovel-like structure, with a weak mesal groove that does not extend the length of the finger. Flagellum complex composed of two large, dorsal, spatulate bristles between which is a long, slender, apically plumose spine and a basal group of short, slender, simple spines. First postspiracular abdominal sternite of males with ctenidia on its posterior margin. Mesal tooth of movable finger present. Ectal row of fondal teeth graded in size III, I, IV, II; mesal row I, III, II, IV."


Muma noted in his diagnosis of the subfamily Eremobatinae (p. 41): "Fixed finger of male chelicera usually style-like, except in Eremothera, new genus, and usually having a ventral or mesoventral groove."
In the first couplet of his key to males of the subfamily (same page) he separated Eremothera from other eremobatine genera as follows: "Fixed finger sculptured, not style-like......................................................................................................................Eremothera"

He included two species in Eremothera: E. sculpturata Muma (described as new) and, on the basis of the fondal dentition of the female, E. barberi Muma (also described as new from a single female specimen and  later transferred to the genus Eremobates by Brookhart and Muma in 1981).


Subsequent accounts:

Muma 1970a: 3 (key), 29:

"Leg I with 1 claw; large, robust, short legged species…Eremobatinae Roewer...................2

Palpus with or without spinelike setae; when present, apparently not movable and not on metarsus and tarsus..............................................................................................................3

Fixed finger short and dorsally lobate or sculptured...............................Eremothera Muma"

 

Muma retained both E. sculpturata Muma 1951 and E. barberi Muma 1951 in the genus, noting that females of the two species exhibit similar fondal dentition.


Muma 1976: 18:

Muma retained both E. sculpturata Muma 1951 and E. barberi Muma 1951 in the genus, noting that "Only two species have been described in this genus; one is apparently Chihuahuan, the other Sonoran"


Muma 1986: 9, 10:

"The new records and new species of this genus that are included here do not significantly alter the diagnostic characters cited by Muma (1951). It should be noted, however, that one of the two large spatulate setae of the flagellum complex may be the apical plumose bristle and not a dorsal bristle as previously stated."


Muma 1987: 10:

"The new records and new species of this genus that are included here do not significantly alter the diagnostic characters cited by Muma (1951). It should be noted, however, that one of the two large spatulate setae of the flagellum complex may be the apical plumose bristle and not a dorsal bristle as previously stated."


Muma 1989: 3 (key), 15:

"Leg 1 with one claw; chelicerae about twice as long as wide; small to large species ......
............................................................................................................. Eremobatinae ... 2

Fixed cheliceral finger short, sculptured and flanged; mesoventral groove a trough-like slot; moderate-sized species ............................................................. Eremothera Muma "


"Moderate- sized Eremobatinae. Fixed cheliceral finger of males sculptured and with short, weak mesal groove that does not extend length of finger. Dorsal setae of flagellum complex striate; ventral setae plumose; apical striate, and apical plumose setae both flattened and spatulate. Females have opercula broadly triangular in form."


Harvey 2003: 248:

Recorded the genus as containing two species: E. sculpturataMuma 1951 and E. drachmaniMuma 1986./p>


Brookhart and Brookhart 2006: 305:

Retained both E. sculpturata and E. drachmani as the sole members of the genus


Notes:

The genus Eremothera contains two species from the southwestern United States and adjacent Mexico.


Included species


 

Key to species



Bibliography: