Putnam1883 : 255 Putnam1883 : 260 Eremobates cinereus ( Putnam 1883 ) Kraepelin 1901 : 124 Eremorhax striatus ( Putnam 1883 ) Muma 1951 : 45 Eremopus striatus ( Putnam 1883 ) Muma & Muma 1988 : 10 Eremocosta striata ( Putnam 1883 ) Harvey 2002 : 451 Revision of the camel spider genus Eremocosta Roewer and a description of the female Eremocosta gigas Roewer (Arachnida, Solifugae) Cushing, Paula E. Channiago, Felix Brookhart, Jack O. Zootaxa 2018 2018-03-29 4402 3 443 466 6GGKY (Putnam 1883) Putnam 1883 [151,569,786,812] Arachnida Eremobatidae Eremocosta GBIF Animalia Solifugae 16 459 Arthropoda species striata     Datames striatus  Putnam1883: 255–257.    Datames cinerea  Putnam1883: 260–261.    Eremobates cinereus( Putnam 1883):  Kraepelin 1901: 124.  Eremorhax striatus( Putnam 1883):  Muma 1951: 45–47, figs. 26–31.  Eremopus striatus( Putnam 1883):  Muma & Muma 1988: 10–11, fig. 2.  Eremocosta striata( Putnam 1883):  Harvey 2002: 451.     Typematerial.  Datames striatus: Female holotypefrom Camp Grant, Arizona,  USA( BNHM).  Datames cinerea: Typelocality of male holotypeunknown ( Academy of Natural Sciences, Philadelphia, Pennsylvania, USA). Wedid not examine the female holotype.   Specimens examined. Males (8). USA: Arizona, Graham County, 6 milessouth of San Carlos, San Carlos Reservoir, N 33.24996°, W 110.44431°,  805 melev.,  5 August 1974, coll. Martin H. Muma( 2 males: DMNSZA.16329); USA: Arizona,  Santa Cruz County, E.of Amadoalong  Hopkins MountainRd. , between the 2–5 Kmsigns, N 31.714°, W 111.009°,  1011 melev.,  30 July 2008, coll. Joe Warfel( DMNSZA.21079); USA: Arizona, Santa Cruz County, Hopkins Mountain Rd. , toward Whipple Observatory, N31.67222°, W 110.90528°,  1753 melev.,  28 July 2009, coll. Joe Warfel, on roadway ( DMNSZA.25446); USA: Arizona, Santa Cruz County, Hopkins Mountain Rd. , N 31.46139°, W 111.00417°,  1112 melev.,  28 July 2009, coll. Joe Warfel, on roadway at 21:28 hrs ( DMNSZA.25453); USA: Arizona, Pima County,  10 milesE Continental, 3 milesN Madera Canyon,  14–15 July 1989, K. Ribardo( 2 males: CAS Casent9033604).     Females(2). USA: Arizona, Santa Cruz County, Esplendor Resort, 1069 Camino Caralampi, Rio Rico, N 31.46194°, W 110.99746°,  1063 melev.,  July 2009, coll. Lou Perrotti, caught in room ( DMNSZA.25451);  MÉXICO: Sonora, 73.9 milesN. of Hermosillo,  5 August 1968, coll. T. Briggs( CASCasent-9033697).   Diagnosis.The shape of the male chelicera with its slightly rounded fondal notch, a tiny MM, and a flattened ridge-like MD distinguishes this species from all other  Eremocosta.Only  E. gigasellahas a ridge-like structure positionally homologous to the sharper distal ridge that might be a modified MD (see Figs. 2S & O, arrows).  Eremocosta gigashas a distinctive MD tooth at that same position on the movable finger ( Fig. 2K, arrow). The genital operculum of  E. striatais most similar to that of  E. calexicensis; however, the curved distal portions of the genital wings are more rounded than those of  E. calexicensis(compare Figs. 4E & B).   Measurements. Males (n = 8).TL 31.0–50.0; CL 9.0–16.0; CH3.4–5.6; FNL 0.3–2.0; FNH 0.4–0.9; FFH 1.0–1.6; PL 25.0–40.5; PT 7.0–8.0; PMT 1.7–3.0; LI 20.5–31.0; LIV 27.0–43.0; PPL 5.0–7.9; A/CP 4.3–5.6; FNL/ FNH 0.5–2.5; FFH/FNH 1.3–2.3; FFH/ CH0.2–0.5.  Measurements. Females (n = 2).TL 34.5, 50.0; CL 9.0, 17.5; CH4.0, 5.5; PL 22.0, 35.0; PT 7.5, 7.7; PMT 2.0, 2.9; LI 19.5, 26.0; LIV 34.5, 35.0; PPL 3.9, 4.0; A/CP 3.9, 4.0.  Description. Coloration. Male.Overall dusky yellow body and appendages; legs dusky violet-brown at tibiafemur joint. Propeltidium reticulate violet-brown with a longitudinal lighter stripe the width of the eye tubercle ( Fig. 5G). Abdomen dark dorsally and lighter ventrally.  Chelicera. Male.VDC apical, oriented prolaterally, narrow, with thin carina ( Fig. 1F, arrow). Fixed finger broad at the base narrowing at the apical third of the length in retrolateral view with no median dentition. Movable finger: prominent MP-two tiny MSM (some specimens with just one)-either a very small, but distinct, MM or just a slight ridge at that location (difficult to see in Fig. 2S)-a long ridge-like MD; distinct MPL ( Figs. 2S & T). Fondal notch seemingly curved and distinct ( Figs. 2S & T). Two tiny RFA; fondal teeth graded I, III, II, IV retrolaterally and I, II, III, IV prolaterally ( Fig. 3F).  Setation. Male.Typical.  Coloration. Female.Coloration as in the males but sometimes markings are less distinct.  Chelicera. Female.Fixed finger: large FP-2 small FSM-FM-2 small FSD-smaller FD. Movable finger: large MP-two small MSM-medium MM; smaller but distinct MPL ( Figs. 2U & V). Two RFA, proximal tiny; fondal teeth graded as in the male.  Setation. Female.Typical.  Genital operculum. Muma’s illustration is accurate (1951, fig. 31, p. 46). Thin anterior arms; relatively large posterior wings ( Fig. 4E).   Distribution. USA Arizona.  MÉXICO: Sonora. Biome: Sonoran Desert.   Discussion.  Eremocosta striatais a large species that can be seen by vehicle headlights scurrying across a road (pers. obs, JB). It seems to occupy the Sonoran region east of the ColoradoRiver in Arizonaand the state of Sonora,  México. 1836936158 [151,1045,1113,1138] Arizona 16 459 2 Arizona holotype 1836936150 BNHM United States of America Academy of Natural Sciences We Philadelphia 16 459 3 Pennsylvania holotype 1836936151 1974-08-05 DMNS San Carlos Reservoir & Martin H. & Santa Cruz County, E. United States of America Graham County 805 33.24996 Muma 1 -110.44431 San Carlos 16 459 2 2 Arizona 1836936152 2008-07-30 DMNS Km & Joe Warfel United States of America 1011 31.714 Mountain Rd 72 -111.009 16 459 1 Arizona 1836936155 2009-07-28 DMNS Whipple Observatory, N & Joe Warfel United States of America 1753 31.67222 Mountain Rd 1 -110.90528 16 459 1 Arizona 1836936154 1989-07-14 2009-07-28 1989-07-14 DMNS, CAS Joe Warfel & K. Ribardo United States of America Pima County 1112 31.46139 Casent 1 -111.00417 Madera Canyon 16 459 2 2 Arizona 1836936147 2009-07 DMNS Lou Perrotti United States of America Santa Cruz County 1063 31.46194 Esplendor Resort 1 -110.99746 Females 16 459 1 Arizona 1836936146 [151,1314,1617,1642] 1968-08-05 CAS T. Briggs Mexico Hermosillo 16 459 1 Sonora