Mowatcha is one of the two primordial sisters of the Tikuna origin myth, born from the right knee of Ngutapa alongside the elder hero Yoi. In the account of the knees she emerges already engaged in women's work, twisting a bag of tucum palm fibre, so that she and her sister embody the beginnings of feminine craft as the brothers embody hunting and fishing. Though she plays a lesser narrative role than the hero-brothers, her presence at the four-fold birth is integral to the balanced pairing of the sexes at the origin of the Tikuna world, and her name recurs in the ritual songs of the girls' puberty festival.