Kraepelin 1899a : 243 Eremobates spinipalpis (Kraepelin 1899) Kraepelin 1901 : 124 Eremorhax spinipalpis (Kraepelin 1899) Muma 1970 : 8 Eremocosta spinipalpis (Kraepelin 1899) 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 4DSW Roewer 1934 [151,294,1844,1870] Arachnida Eremobatidae Eremocosta GBIF Animalia Solifugae 15 458 Arthropoda genus     Datames spinipalpis  Kraepelin 1899a: 243–244.    Eremobates spinipalpis(Kraepelin 1899):  Kraepelin 1901: 124.  Eremorhax spinipalpis(Kraepelin 1899):  Muma 1970: 8.  Eremocosta spinipalpis(Kraepelin 1899):  Harvey 2002: 451.     Typematerial. Female holotypefrom Santa Rosalio, Lower California,  México, coll. S. Diguet, Number 33–97 inMuséum National d’Histoire Naturelle, Paris, France. Type not examined. Male unknown.   Diagnosis. Muma (1970)distinguishes  E. spinipalpisfrom the related  E. striatusby the lack of markings on the legs and palpi and the “curved lateral margins of the median caudal opercular notch.”   Measurements.From Muma (1970). TL 30; CL 10.2; CH5.0; PL 31; PT 3.0; PMT 14.2; LI 18; LIV 30; PPL 4.6.   Distribution. Known from typeonly.  MÉXICO: Baja CaliforniaSur. Biome: Sonoran Desert.   Discussion.Since Kraepelin (1899a)described the female only, the placement of this species is speculative as the presence of the male VDC is a critical criterion in determining this genus. The female genital operculum figured by Muma (1970)closely resembles that of  Eremocosta striata. Its typelocality on the southern Baja Peninsula would seem to separate it from  E. striatabut until further specimens are examined, the placement will remain in  Eremocosta.  Kraepelin (1899a)described the palp as having spines “with width equal to height,” hence the name.  Eremocosta formidabilisfemale also has some short, robust palpal setae that might be interpreted as spines. Muma’s (1987)  Eremocostakey does not include  E. spinipalpisbut his unpublished manuscript (in library of JOB) does. 1836936174 [151,953,151,176] Santa Rosalio 16 459 2 California holotype 1836936176 S. Diguet Mexico Mexico 16 459 1 holotype