-53.93528, -27.207224: 10 Treatments

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Epicadinus villosus     Prado, André Wanderley Do, Baptista, Renner Luiz Cerqueira & Machado, Miguel, 2018, Taxonomic review of Epicadinus Simon, 1895 (Araneae: Thomisidae), Zootaxa 4459 (2), pp. 201-234: 223-229 223-229
Mecynogea bigibba     Martins, Pedro H. & Santos, Adalberto J., 2018, Morphology and taxonomy of the orb-weaving spider genus Mecynogea, and a peculiar species of Argiope (Araneae, Araneidae), Zootaxa 4415 (3), pp. 423-451: 438 438
Runcinioides litteratus     Faleiro, Bárbara T. & Santos, Adalberto J., 2019, Revision of the crab-spiders of the genus Runcinioides Mello-Leitão, 1929 (Araneae, Thomisidae), Zootaxa 4567 (1), pp. 25-46: 37-40 37-40
Physalaemus carrizorum   new species  Cardozo, Dario E. & Pereyra, Martin O., 2018, A new species of Physalaemus (Anura, Leptodactylidae) from the Atlantic Forest of Misiones, northeastern Argentina, Zootaxa 4387 (3), pp. 580-590: 582-587 582-587
Imbira negrita   sp. nov.  Negrete, Lisandro & Brusa, Francisco, 2017, Increasing diversity of land planarians (Platyhelminthes: Geoplanidae) in the Interior Atlantic Forest with the description of two new species and new records from Argentina, Zootaxa 4362 (1), pp. 99-127: 106-112 106-112
Melese paranensis     Beccacece, Hernán Mario & Zapata, Adriana Inés, 2017, Taxonomic changes of some neotropical species of Arctiini Leach (Lepidoptera: Erebidae: Arctiinae), Zootaxa 4272 (3), pp. 421-429: 426 426
Runcinioides argenteus     Faleiro, Bárbara T. & Santos, Adalberto J., 2019, Revision of the crab-spiders of the genus Runcinioides Mello-Leitão, 1929 (Araneae, Thomisidae), Zootaxa 4567 (1), pp. 25-46: 29-33 29-33
Callibaetis (Callibaetis) willineri     Cruz, Paulo Vilela, Salles, Frederico Falcão & Hamada, Neusa, 2017, Additions and corrections to the systematics of mayfly species assigned to the genus Callibaetis Eaton 1881 (Ephemeroptera: Baetidae) from South America, Zootaxa 4231 (4), pp. 500-534: 527 527
Zischkaia pacarus     Nakahara, Shinichi, Zacca, Thamara, Dias, Fernando M. S., Dolibaina, Diego R., Xiao, Lei, Espeland, Marianne, Casagrande, Mirna , 2019, Revision of the poorly known Neotropical butterfly genus Zischkaia Forster, 1964 (Lepidoptera, Nymphalidae, Satyrinae), with descriptions of nine new species, European Journal of Taxonomy 551, pp. 1-67: 38-44 38-44
Mesabolivar turvo   sp. n.  Huber, Bernhard A., 2018, The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits, Zootaxa 4395 (1), pp. 1-178: 121-123 121-123