-56.816666, -10.783334: 10 Treatments

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Lachnomyrmex amazonicus   new species  Feitosa, R. M. & Brandão, C. R. F., 2008, A taxonomic revision of the Neotropical myrmicine ant genus Lachnomyrmex Wheeler (Hymenoptera: Formicidae), Zootaxa 1890, pp. 1-49 : 11-13 11-13
Nyssorhynchus (Nyssorhynchus) jamariensis   sp. nov.  Sant’Ana, Denise Cristina & Sallum, Maria Anice Mureb, 2022, A new species of the Nuneztovari Complex of Nyssorhynchus (Diptera: Culicidae) from the western Brazilian Amazon, Zootaxa 5134 (2), pp. 275-285 : 276-281 276-281
Malanea macrophylla     Roxo, Rafaela Sales Pereira & Barbosa, Maria Regina de Vasconcellos, 2023, The genus Malanea Aubl. (Rubiaceae) in the Atlantic Forest of Brazil, Plant Ecology and Evolution 156 (3), pp. 257-275 : 257 257
Moenkhausia mutum   sp. nov.  Dagosta, Fernando C. P. & Marinho, Manoela M. F., 2016, A new species of Moenkhausia Eigenmann (Characiformes: Characidae) from the rio Arinos basin, Brazil, Neotropical Ichthyology 14 (2), No. e 150052, pp. 1-7 : 2-6 2-6
Dinoponera mutica     Dias, Amanda Martins & Lattke, John Edwin, 2021, Large ants are not easy - the taxonomy of Dinoponera Roger (Hymenoptera: Formicidae: Ponerinae), European Journal of Taxonomy 784 (1), pp. 1-66 : 45-47 45-47
Corydoras apiaka   sp. nov.  Espíndola, Vinicius C., Spencer, Marcelo R. S., Rocha, Leandro R. & Britto, Marcelo R., 2014, A new species of Corydoras Lacépède (Siluriformes: Callichthyidae) from the Rio Tapajós basin and its phylogenetic implications, Papéis Avulsos de Zoologia (São Paulo) 54 (3), pp. 25-32 : 26-31 26-31
Acestrocephalus nigrifasciatus   sp. nov.  Menezes, Naércio A., 2006, Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae), Neotropical Ichthyology 4 (4), pp. 385-400 : 395-397 395-397
Caenotropus schizodon   new species  Alexandre Scharcansky & Carlos Alberto Santos de Lucena, 2007, Caenotropus schizodon, a new chilodontid fish from the Rio Tapajos drainage, Brazil (Ostariophysi: Characiformes: Chilodontidae)., Zootaxa 1557, pp. 59-66 : 60-63 60-63
Brycon falcatus     Lima, Flávio C. T., 2017, A revision of the cis-andean species of the genus Brycon Müller & Troschel (Characiformes: Characidae), Zootaxa 4222 (1), pp. 1-189 : 142-158 142-158
Schizodon paucisquamis   sp. nov.  Britski, Heraldo A., Garavello, Júlio C. & Ramirez, Jorge L., 2023, Description of a new species of Schizodon (Characiformes: Anostomidae) from the upper rio Tapajós basin, Brazil, Zootaxa 5330 (1), pp. 135-140 : 136-139 136-139