Eremothera drachmani Muma, 1986

Eremothera drachmani Muma 1986

Eremobates drachmani Muma 1986: 10; Muma 1987: 10; Muma, 1989: 15; Brookhart & Brookhart 2006: 305.


Adult male, lateral view. Click HERE for additional images archived under the
Camel Spiders of North America faunal project on the Symbiota Collections of
Arthropods Network.

 

Diagnosis:

Medium-sized eremobatine solifuge with shovel-like termination of fixed cheliceral finger (see above) typical of genus, a palpal scopula, and four ctenidia on first post-spiracular sternite. Differs from E. sculpturata (the only other known member of the genus), in the latter two characters (E. sculpturata bears six ctenidia and lacks a palpal scopula).


Holotype and paratypes:

Male holotype on patio at Neuva Guaymas, Sonora, Mexico, October 1969, by Grace Drachman deposited in the American Museum of Natural History.


Original description:

Muma 1986: 10, 11, figs. 23-25:

"Eremothera drachmani, new species

 Figures 23-25

 DIAGNOSIS: Aside from qualitative differences in the sculpturing of the fixed cheliceral

 finger, this species differs from sculpturata in the possession of a palpal scopula, only 4

 flattened abdominal ctenidia, the palpus dusky or darkened on the tarsus, metatarsus,

 and tibia, and both the third and fourth legs dark laterally on the tibia and on most of

 the femur. Females are unknown .

  MALE HOLOTYPE: Total length, 25.0 mm.

  Length Width
Chelicerae 5.3 mm 3.1 mm
Propeltidium 3.2 5.2
Palpi 22.0 CL/CW=1.71
1st legs 17.0 PW/PL=1.63
4th legs 28.0 A/CP=7.88

Coloration in alcohol similar to that of E. sculpturata except that the palpi are dusky on the tarsi, metatarsi, and tibiae, and both leg 3 and leg 4 are dark laterally on the tibiae and most of the femora.

Structure essentially as in sculpturata. Dentition as shown in figures 23 and 24. Palpus provided with a scopula of 80 plus or minus papillae on the metatarsus. First post-stigmatic abdominal sternite with 4 flattened sword-like ctenidia, figure 25. Other structures the same as for sculpturata and probably of generic importance only.

"REMARKS: This species becomes the second known species of the genus. Eremothera barberi Muma (1951) has been moved by Brookhart and Muma (1981) to the pallipes species-group of Eremobates."


Subsequent accounts:

Muma 1987: 10, 11, figs. 23-25:

"Eremothera drachmani, new species

 Figures 23-25

 DIAGNOSIS: Aside from qualitative differences in the sculpturing of the fixed cheliceral

 finger, this species differs from sculpturata in the possession of a palpal scopula, only 4

 flattened abdominal ctenidia, the palpus dusky or darkened on the tarsus, metatarsus,

 and tibia, and both the third and fourth legs dark laterally on the tibia and on most of

 the femur. Females are unknown .

  MALE HOLOTYPE: Total length, 25.0 mm.

  Length Width
Chelicerae 5.3 mm 3.1 mm
Propeltidium 3.2 5.2
Palpi 22.0 CL/CW=1.71
1st legs 17.0 PW/PL=1.63
4th legs 28.0 A/CP=7.88

Coloration in alcohol similar to that of E. sculpturata except that the palpi are dusky on the tarsi, metatarsi, and tibiae, and both leg 3 and leg 4 are dark laterally on the tibiae and most of the femora.

Structure essentially as in sculpturata. Dentition as shown in figures 23 and 24. Palpus provided with a scopula of 80 plus or minus papillae on the metatarsus. First post-stigmatic abdominal sternite with 4 flattened sword-like ctenidia, figure 25. Other structures the same as for sculpturata and probably of generic importance only.

"REMARKS: This species becomes the second known species of the genus. Eremothera barberi Muma (1951) has been moved by Brookhart and Muma (1981) to the pallipes species-group of Eremobates."

 

Brookhart & Brookhart 2006: 305:

"Eremothera drachmani Muma 1986:10

 Type material.—Male holotype from Nueva Guymas, Sonora, Mexico (AMNH).

 Recorded specimens.—Known from type only.

 Distribution.—Mexico: Sonora.

 Biome: Sonoran Desert."


Distribution:

UNITED STATES: Arizona, California. MEXICO: Sonora.

 


Notes:

This species has been found to co-occur with Eremothera sculpturata in Catalina State Park, Pima County, Arizona. The known distribution of the two species is similar..


Bibliography: