Whip spiders of the genus Sarax Simon 1892 (Amblypygi: Charinidae) from Borneo Island Author Rahmadi, Cahyo Author Harvey, Mark S. Author Kojima, Jun-Ichi text Zootaxa 2010 2612 1 21 journal article 10.5281/zenodo.197810 3fed616e-ea51-496b-b522-145b87775b5a 1175-5326 197810 Key to the species of Sarax species from Borneo 1. Anterior margin of carapace rounded; median eye tubercle well-developed or reduced in size; pedipalpal patella with 4 spines, P1 the longest, and subsequent spines decreasing in size from distal to proximal; pedipalpal tarsus with 2 or 3 spines; tibia of leg IV with 17 or 19 trichobothria ..................................................................................... 2 - Anterior margin of carapace slightly rounded, nearly straight ( Fig. 1 ); median eye tubercle reduced in size; pedipalpal patella with 3 spines, about equal in size ( Fig. 4 ); pedipalpal tarsus with 3 spines ( Fig. 5 ); tibia of leg IV with 19 trichobothria ( Fig. 6 ) ........................................................................................................... Sarax cavernicola sp. nov. 2. Pedipalpal patella with 4 major spines on antero-dorsal and 4 or 3 major spines on pedipalpal femur; pedipalpal tarsus with 2 or 3 spines; tibia leg IV with 19 trichobothria ............................................................................................. 3 - Pedipalpal patella with 4 major spines on antero-dorsal and 3 major spines on pedipalpal femur ( Fig. 16 ); pedipalpal tarsus with 2 minute spines ( Fig. 18 ); tibia of leg IV with 17 trichobothria ( Fig. 20 ).................................................... ................................................................................................................................ Sarax sarawakensis ( Thorell 1888 ) 3. Pedipalpal tarsus with 2 spines; trichobothrium bt on the middle or close to distal fourth basitibial segmenttrichobothrium bc closer to bf than to sbf or about midway between bf and sbf ; with or without sexual dimorphism ............. 4 - Pedipalpal tarsus with 3 spines ( Figs. 11 , 13 ); trichobothrium bt close to distal fourth basitibial segment, trichobothrium bc about midway between bf and sbf ( Fig. 12 ); with distinct sexual dimorphism ............ Sarax yayukae sp. nov. 4. With distinct sexual dimorphism; median eye tubercle completely divided into two parts ( Fig. 26 ); trichobothrium bt close to proximal fourth basitibial segment, trichobothrium bc about midway between bf and sbf ( Fig. 29 )................ .................................................................................................................................................... Sarax mardua sp. nov. - Without sexual dimorphism; median eye tubercle high, black and well-developed, not divided into two parts ( Fig. 21 ); trichobothrium bt on the middle of fourth basitibial segment; trichobothrium bc closer to bf than to sbf ( Fig. 25 ) ................................................................................................................................... Sarax sangkulirangensis sp. nov.