-54.50264, -29.66025: 10 Treatments

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Glossoscolex     Bartz, Marie L. C., James, Samuel W., Steffen, Gerusa P. K., Antoniolli, Zaida, Steffen, Ricardo B. & Brown, George G., 2018, New species-group taxa of Glossoscolex (Clitellata: Glossoscolecidae) from Rio Grande do Sul, Brazil, Zootaxa 4496 (1), pp. 548-561 : 560 560
Calibrachoa irgangiana   sp. nov.  Stehmann, João Renato & Greppi, Julián Alejandro, 2011, Two new species of Calibrachoa (Solanaceae) from subtropical South America, Phytotaxa 25, pp. 31-38 : 32-34 32-34
Rhamnidium riograndense   sp. nov.  Figueira, Maurício & Schindler, Bianca, 2021, Rhamnidium riograndense (Rhamnaceae), a new species from southern Brazil, Phytotaxa 510 (1), pp. 53-60 : 54-57 54-57
Hisonotus charrua     Carvalho, Tiago Pinto & Reis, Roberto E., 2011, Taxonomic review of Hisonotus Eigenmann & Eigenmann (Siluriformes: Loricariidae: Hypoptopomatinae) from the laguna dos Patos system, southern Brazil, Neotropical Ichthyology 9 (1), pp. 1-48 : 21-22 21-22
Falconina gracilis     García, Fabián & Bonaldo, Alexandre B., 2023, Taxonomic revision of the soldier spider genus Falconina Brignoli, 1985 (Araneae: Corinnidae: Corinninae), Zootaxa 5343 (3), pp. 201-242 : 205-220 205-220
Odontesthes perugiae     Wingert, Juliana M., Ferrer, Juliano & Malabarba, Luiz R., 2017, Review of the Odontesthes perugiae species group from Río de La Plata drainage, with the description of a new species (Atherinomorpha: Atherinopsidae), Zootaxa 4250 (6), pp. 501-528 : 503-514 503-514
Glossoscolex     Bartz, Marie L. C., James, Samuel W., Steffen, Gerusa P. K., Antoniolli, Zaida, Steffen, Ricardo B. & Brown, George G., 2018, New species-group taxa of Glossoscolex (Clitellata: Glossoscolecidae) from Rio Grande do Sul, Brazil, Zootaxa 4496 (1), pp. 548-561 : 550-552 550-552
Oxalis niederleinii     Nuernberg-Silva, Anelise & Fiaschi, Pedro, 2021, Taxonomic revision and morphological delimitation of Oxalis sect. Ripariae (Oxalidaceae), Phytotaxa 529 (1), pp. 125-159 : 142-144 142-144
Scleronema operculatum     Ferrer, Juliano & Malabarba, Luiz R., 2020, Systematic revision of the Neotropical catfish genus Scleronema (Siluriformes: Trichomycteridae), with descriptions of six new species from Pampa grasslands, Neotropical Ichthyology (e 190081) 18 (2), pp. 1-81 : 53-61 53-61
Gymnotus cuia   sp. nov.  Craig, Jack M., Malabarba, Luiz R., Crampton, William G. R. & Albert, James S., 2018, Revision of Banded Knifefishes of the Gymnotus carapo and G. tigre clades (Gymnotidae Gymnotiformes) from the Southern Neotropics, Zootaxa 4379 (1), pp. 47-73 : 55-59 55-59