-57.366665, -5.7: 12 Treatments

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Marmosops (Sciophanes) marina   sp. nov.  Ferreira, Claudilívia, Oliveira, Ana Cristina Mendes De, Lima-Silva, Luan Gabriel & Rossi, Rogério Vieira, 2020, Taxonomic review of the slender mouse opossums of the “ Parvidens ” group from Brazil (Didelphimorphia: Didelphidae: Marmosops), with description of a new species, Zootaxa 4890 (2), pp. 201-233 : 208-221 208-221
Xenurobrycon     Toledo-Piza, Mônica, Baena, Eduardo G., Dagosta, Fernando C. P., Menezes, Naércio A., Ândrade, Marcelo, Benini, Ricardo C., Bertaco, Vinicius A., Birindelli, José Luís O., Boden, Gert, Buckup, Paulo A., Camelier, Priscila, Carvalho, Fernando R., Castro, Ricardo M. C., Chuctaya, Junior, Decru, Eva, Derijst, Eddy, Dillman, Casey B., Ferreira, Katiane M., Merxem, Dimitri G., Giovannetti, Victor, Hirschmann, Alice, Jégu, Michel, Jerep, Fernando C., Langeani, Francisco, Lima, Flávio C. T., Lucena, Carlos A. S., Lucena, Zilda Margarete S., Malabarba, Luiz R., Malabarba, Maria Cláudia S. L., Marinho, Manoela M. F., Mathubara, Kleber, Mattox, George M. T., Melo, Bruno F., Moelants, Tuur, Moreira, Cristiano R., Musschoot, Tobias, Netto-Ferreira, André L., Ota, Rafaela P., T. Oyakawa, Osvaldo, Pavanelli, Carla S., Reis, Roberto E., Santos, Osmar, Serra, Jane Piton, Silva, Gabriel S. C., Silva-Oliveira, Cárlison, Souza-Lima, Rosana, Vari, Richard P. & Zanata, Angela M., 2024, Checklist of the species of the Order Characiformes (Teleostei: Ostariophysi), Neotropical Ichthyology (e 230086) 22 (1), pp. 1-548 : 285-288 285-288
Xenurobrycon varii   sp. nov.  Mendonça, Marina Barreira, Peixoto, Luiz Antônio Wanderley, Dutra, Guilherme Moreira & Netto-Ferreira, André Luiz, 2016, A new miniature of Xenurobryconini (Characiformes: Characidae) from the rio Tapajós basin, Brazil, Neotropical Ichthyology (e 150057) 14 (1), pp. 1-8 : 2-7 2-7
Thayeria tapajonica   sp. nov.  Moreira, Cristiano R. & Lima, Flávio C. T., 2017, Thayeria tapajonica (Characiformes: Characidae), a new species from rio Tapajós basin, Brazil, Zootaxa 4344 (1), pp. 137-146 : 138-143 138-143
Euryrhynchus amazoniensis     Pachelle, Paulo P. G. & Tavares, Marcos, 2018, The freshwater shrimp family Euryrhynchidae Holthuis, 1950 (Crustacea: Decapoda: Caridea) revisited, with a taxonomic revision of the genus Euryrhynchus Miers, 1878, Zootaxa 4380 (1) : 17-37 17-37
Imparfinis munduruku   sp. nov.  Castro, Íthalo Da Silva & Wosiacki, Wolmar Benjamin, 2019, Anew species of Imparfinis Eigenmann & Norris, 1900 (Siluriformes: Heptapteridae) from the Tapajós basin, Brazil, Zootaxa 4701 (5), pp. 461-472 : 462-469 462-469
Myloplus nigrolineatus   sp. nov.  Ota, Rafaela Priscila, Machado, Valéria Nogueira, Andrade, Marcelo C., Collins, Rupert A., Farias, Izeni Pires & Hrbek, Tomas, 2020, Integrative taxonomy reveals a new species of pacu (Characiformes: Serrasalmidae: Myloplus) from the Brazilian Amazon, Neotropical Ichthyology (e 190112) 18 (1) : -1 -1
Myrmecium quasimodo   sp. nov.  Silva-Junior, Claudio J. & Bonaldo, Alexandre B., 2019, Four new species of Myrmecium Latreille, 1824 and complementary description of M. machetero Candiani & Bonaldo, 2017 (Araneae: Corinnidae: Castianeirinae), Zootaxa 4706 (2), pp. 391-400 : 397-400 397-400
Monodelphis (Mygalodelphys) saci   sp. nov.  Pavan, Silvia E., Mendes-Oliveira, Ana C. & Voss, Robert S., 2017, A New Species of Monodelphis (Didelphimorphia: Didelphidae) from the Brazilian Amazon, American Museum Novitates 2017 (3872), pp. 1-20 : 5-17 5-17
Hexapopha quadraginta   sp. nov.  Feitosa, Níthomas M., Ott, Ricardo & Bonaldo, Alexandre B., 2023, Meeting the southern brothers: a revision of the Neotropical spider genus Hexapopha Platnick, Berniker & Víquez, 2014 (Araneae, Oonopidae), Zootaxa 5329 (1), pp. 1-150 : 113-117 113-117
Actinopus caxiuana   sp. nov.  Miglio, Laura Tavares, Pérez-Miles, Fernando & Bonaldo, Alexandre B., 2020, Taxonomic Revision of the Spider Genus Actinopus Perty, 1833 (Araneae, Mygalomorphae, Actinopodidae), Megataxa 2 (1), pp. 1-256 : 108-111 108-111
Cinetomorpha adaga   sp. nov.  Ott, Ricardo, Ubick, Darrell, Bonaldo, Alexandre B., Brescovit, Antonio D. & Harvey, Mark S., 2019, A revision of the new world goblin spider genus Cinetomorpha Simon, 1892 revalidated from Gamasomorpha Karsch, 1881 (Araneae, Oonopidae, Oonopinae), Zootaxa 4641 (1), pp. 1-152 : 91-93 91-93