The species is named after the Yapisland group on which it occurs.
Distribution
Sobasina yapensis is only known from Yap in the Caroline Islands.
References
Berry J.W.; Beatty, J.A. & Proszynski, J. (1998): Salticidae of the Pacific Islands. III. Distribution of Seven Genera, with Description of Nineteen New Species and Two New Genera. Journal of Arachnology26(2): 149-189. PDF