Material examined. Holotype ♀ (IZCAS), Indonesia, Borneo, Balikpapan, Wanarist (1º01.523′S, 116º51.917′E), elev. 60 m, 18.VIII.2017, leg. H. Liu & Z. Chen.
Etymology. The specific name is derived from the type locality; noun.
Diagnosis. The new species is similar to S. phangngaensis Deeleman-Reinhold, 1995 but can be distinguished by the long, tubular spermathecae (Fig. 7A). S. phangngaensis females have oval spermathecae (Deeleman-Reinhold, 1995: fig. 290).
Description. Female. Total length 1.08; carapace length 0.50; carapace width 0.43; abdomen length 0.55; abdomen width 0.41. Prosoma: carapace pyriform, narrowing gradually anteriorly; shiny, light yellow, suffused with purplish pattern (Fig. 7A); pars cephalica flat; fovea not visible. Sternum light yellow, suffused with purplish color, as long as wide. Endites light yellow with purplish tinge; with serrula; labium light yellow with purplish tinge. Clypeus nearly vertical; short. Chelicerae light yellow; promargin with a series of six teeth reaching the lamina; retromargin with two very small denticles (Fig. 58A). Eyes: six contiguous eyes surrounded by black pigmentation, nearly subequal (Fig. 7C). Opisthosoma oval; purplish (Fig. 7D). Legs missing. Genitalia. Internal genitalia with afferent spermathecae short, straight, not extending past the sides of the abdomen (Fig. 7B); spermathecae long, tubular (Fig. 7A).
Male. Unknown.
Distribution. Known only from the type locality.