Agayotoguerra may be a dialect of Yawalapití. Ethnologue (2106) lists it as "unclassified" and related to Waurá [wau] and to Yawalapití [yaw]; for number of speakers it gives "10 (extinct)". "The Agavotoqëng are a tropical forest tribe who live in the Xingú park, Mato Grosso state, Brazil; their village is on the east side of the Xingú River, between the Kuluene and Kurizevo rivers. The tribe numbers fewer than 100; they speak a language similar to that of the Yawalapití, from whom they may have broken away at some earlier time. The tribe maintains isolation form other groups in the Xingú Indian Park." (Villas Boas, Orlando and Cláudio Villas Boas. 1973. Xingú: The Indians, their Myths.)