In terms of morphology, other peculiarities of the genus, compared to other stingless bees, are the hairy
compound eye, the spatulate setae on the external surface of worker protibia, the shape of the metasoma, which is
wide at its base, acuminate at the apex and with sides slightly curved, and body and wings covered with abundant
long, simple, bristle-like setae, with few plumose setae (Camargo & Pedro 2007a).
Three further nests of T. extranea were found 19 years later in hollows of dead, dried branches of "Tanimbuca",
Buchenavia suaveolens Eichler (Combretaceae), in periodically flooded forests ("igapó" forest), near the mouth of