Matthew Wallrath calls native fiber "wild silk."
Matthew Wallrath, "Excavations in the Tehuantepec Region, Mexico," Transactions of the American Philosophical Society, New Series 57, Part 2 (1967): 12
The cultivation of nopals (Nopalea cochenillifera) for raising cochineal and the keeping of stingless bees are practices now virtually abandoned. Wild silk used to be gathered by Zapotec women and woven into fabric which was sold with high profits.