Tapajosella elongata Wood & Okamura, 2017

Material examined. Statoblasts from the Río Negro, 13 km NW of Manaus, Amazonas State, Brazil, 3° 0.099’ S, 60° 5.623’ W (Site 7), collected 6 May 2018 by T. Wood and B. Okamura .

Remarks. The slender statoblasts of this species, previously seen only in January, 2016 near Santarém (Wood & Okamura 2017), were encountered for the first time in the Río Negro near Manaus. While many appeared to be intact, they contained no living material. The canoe-like shape of these statoblasts is so unique that the species has been placed in its own family, Tapajosellidae . While colonies have not yet been found, the occurrence of statoblasts in a different season and in a new location suggests that they may be a constant presence in the Amazon.