-58.42177, -34.56374: 10 Treatments

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Diplostraca   sp. nov.  Marinone, María Cristina, Urcola, Juan Ignacio & Rabet, Nicolas, 2016, Review of the Eulimnadia (Branchiopoda: Spinicaudata: Limnadiidae) from Argentina with the description of a new species, Zootaxa 4158 (3), pp. 419-432: 421-426 421-426
Cyclopoida     Diaz, Analía R., Álvarez, Victor Hugo Merlo & Damborenea, Cristina, 2017, Type material housed in the Carcinological Collection of the Museo de La Plata, Argentina, Zootaxa 4303 (1), pp. 88-102: 93-94 93-94
Potamolithus supersulcatus     De Lucía, Micaela & Gutiérrez Gregoric, Diego Eduardo, 2017, Redescripción de Potamolithus supersulcatus Pilsbry, 1896 (Gastropoda, Tateidae) del sur de la cuenca Del Plata, Papéis Avulsos de Zoologia (São Paulo) 57 (17), pp. 207-219: 211-217 211-217
Macropygium graziae   sp. nov.  Silva, Layse Mitsue Harada Da & Campos, Luiz Alexandre, 2021, Revision of Macropygium Spinola, 1837 (Hemiptera: Pentatomidae: Ochlerini) with the revalidation of three species and the description of one new species, Zootaxa 4958 (1), pp. 605-627: 622-626 622-626
Araneae     Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114: 33-37 33-37
Hydrochus merkli   new status  Perkins, Philip D., 2021, Taxonomy of water beetles in the genus Hydrochus Leach, 1817, from Bolivia, Brazil and Paraguay (Coleoptera: Hydrochidae), Zootaxa 4994 (1), pp. 1-93: 46-47 46-47
Araneae     Giroti, André Marsola & Brescovit, Antonio Domingos, 2018, The taxonomy of the American Ariadna Audouin (Araneae: Synspermiata: Segestriidae), Zootaxa 4400 (1), pp. 1-114: 37-41 37-41
Hymenoptera     Wild, A. L., 2007, Taxonomic revision of the ant genus Linepithema (Hymenoptera: Formicidae)., University of California Publications in Entomology 126, pp. 1-159: 61-65 61-65
Characiformes     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: 90-98 90-98
Actinopus insignis     Ríos-Tamayo, D. & Goloboff, P. A., 2018, Taxonomic Revision And Morphology Of The Trapdoor Spider Genus Actinopus (Mygalomorphae: Actinopodidae) In Argentina, Bulletin of the American Museum of Natural History 2018 (419), pp. 1-84: 45-48 45-48