Eremobates inkopaensis Brookhart and Cushing, 2005
Notes: valid
Family: Eremobatidae
Eremobates inkopaensis image
Chris Grinter  

Type Material

 

            Holotype: “Male holotype, In Ko Pah Valley, Meyer Gorge (32?43'N, 1 16002'W), Imperial County, California, U.S.A., 14 March 1982, pitfall trap, J. Berrian (SDMC). Female allotype from same site, pit- fall trap, 17 April 1982, J. Berrian (SDMC). Paratypes: U.S.A.: California: 6 males and 1 female from same site locality by same collector between 4 March-17 April 1982 (5 male paratypes in SDMC, I male and 1 female in DMNS)” (Brookhart & Cushing, 2005, p. 720). 

 

            Measurements: “Male holotype: total length 21, cheliceral length 5.4, cheliceral width 2.2, propeltidium length 2.6, propeltidium width 5.2, palpus length 14, first leg length 16, fourth leg length 27. Ratios: A/CP 7.04, CL/ CW 2.6, PL/PW 0.5, FL/FW 1.0, CW/FFW 5.2” (Brookhart & Cushing, 2005, p. 720). “Male paratypes (6): total length 20-26, cheliceral cheliceral width 2.2-2.9, propeltidum 2.3-3.1, propeltidium width length 17.5-22.0, first leg length fourth leg length 22.0-29.0. Ratios: A/CP 6.5-8.0, CL/CW 2.2-2.9, PL/PW 0.52-0.67, FL/FW 0.7-1.0, CW/FFW 4.2-4.8” (Brookhart & Cushing, 2005, p. 721).

“Female allotype: total length 22, cheliceral length 6.2, cheliceral width 2.2, propeltidium length 2.1, propeltidum width 3.9, palpus 16.5, first leg length 12.5, fourth leg length 21.0. Ratios: A/CP 4.3, CL/CW 2.8, PL/PW 0.74 GOL/GOW 0.82” (Brookhart & Cushing, 2005, p. 721-722). “Female paratype (1): total length 31, cheliceral length 6.8, cheliceral width 2.2, propeltidium length 3.7, propeltidium width 5.5, palpus length 19.5, first leg length 16.5, fourth leg length 26.0. Ratios: A/CP 5.96, CL/CW 2.6, PL/PW 0.65, GOL/GOW 0.76” (Brookhart & Cushing, 2005, p. 722).

            

Operculum Description: “Genital opercula with broad anterior arms, recurved medial margin, short, curved wings, posterior margin straight (Fig. 9)” (Brookhart & Cushing, 2005, p. 722). 

 

         Ctenidia Description: “The allotype but not the paratype with four tiny, thin ctenidia” (Brookhart & Cushing, 2005, p. 722).

            

            Chelicerae Description: Male Chelicerae: “Cheliceral FF with low, inconspicuous ridge on basal aspect of FF. No teeth ventrally. MF with large PT but only a low ridge anteriorally, small posterior IT separate from PT, tiny AT, MST absent (some paratypes have tiny MST). Fondal teeth graded I, III, II, IV. Fondal notch equal length to width. Mesoventral groove deep, median in position expanding ventrally near the tip (Figs. 6 & 7)” (Brookhart & Cushing, 2005, p. 720-721).

Female Chelicerae: “Chelicera typical of the group, FF with large PT and MT, smaller AT, two IT between PT and MT, one IT between IT and AT, MF with large PT and medium AT, two smaller IT, MST absent (Fig. 8)” (Brookhart & Cushing, 2005, p. 722).

 

Diagnosis: This member of the Eremobates palpisetulosus group is a member of the kraepelini series as defined by Muma & Brookhart (1988). It is the only member of this group without ctenidia. Most members of this series are pale but have some dusky to dusky purple markings. Eremobates inkopaensis is entirely pale in both the male and female” (Brookhart & Cushing, 2005, p. 720).

 

Other Information: “The nine specimens of Eremobates inkopahensis were collected in mid-March to early April indicating an early maturity. Eremobates gracilidens Muma 1951 is also found in southern California in Inyo and San Bernardino counties. The two females are shorter legged then E. gracilidens based on the A/CP ratio. The genital opercula are typical of the group although the anterior arms are broader than in other members of this group” (Brookhart & Cushing, 2005, p. 722).

Eremobates inkopaensis image
Chris Grinter  
Eremobates inkopaensis image
Chris Grinter  
Eremobates inkopaensis image
Chris Grinter  
Eremobates inkopaensis image
Chris Grinter  
Eremobates inkopaensis image
Chris Grinter  
Eremobates inkopaensis image
Chris Grinter  
Eremobates inkopaensis image
Chris Grinter