-55.276665, -7.7308335: 10 Treatments

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Rhinopetitia oligolepis   new species  Menezes, Naércio A. & Netto-Ferreira, Andre L., 2019, A systematic review of Rhinopetitia Géry (Teleostei, Characiformes, Characidae) with descriptions of four new species and redescription of R. myersi Géry, Zootaxa 4700 (1), pp. 59-86: 72-76 72-76
Anchoviella juruasanga   new species  Loeb, Marina V., 2012, A new species of Anchoviella Fowler, 1911 (Clupeiformes: Engraulidae) from the Amazon basin, Brazil, Neotropical Ichthyology 10 (1), pp. 13-13: 13--1 13--1
Archolaemus janeae   SP. NOV.  Vari, Richard P., Santana, Carlos David De & Wosiacki, Wolmar B., 2012, South American electric knifefishes of the genus Archolaemus (Ostariophysi, Gymnotiformes): undetected diversity in a clade of rheophiles, Zoological Journal of the Linnean Society 165 (3), pp. 670-699: 686-689 686-689
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
Characiformes   new species  Ohara, Willian M., Jerep, Fernado C. & Cavallaro, Marcel R., 2019, A new species of Microschemobrycon (Characiformes: Characidae) from Rio Xingu basin, Brazil, Zootaxa 4576 (2), pp. 326-336: 327-332 327-332
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
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. 1-2: 108-111 108-111
Thaumasia argenteonotata     Cruz Da Silva, Estevam L. & Carico, James E., 2012, 3567, Zootaxa 3567, pp. 1-64: 9-11 9-11
Architis cymatilis     Santos, Adalberto J., 2007, A revision of the Neotropical nursery-web spider genus Architis (Araneae: Pisauridae), Zootaxa 1578 (1), pp. 1-40: 11-14 11-14
Architis tenuis     Santos, Adalberto J., 2007, A revision of the Neotropical nursery-web spider genus Architis (Araneae: Pisauridae), Zootaxa 1578 (1), pp. 1-40: 7-11 7-11