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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Conservation status | Notes | ||
| 1 | Araneae | Araneidae | Alpaida versicolor | Native | ||||||
| 2 | Lycosidae | Araña Lobo de Pastizal | Lycosa pampeana | Native | ||||||
| 3 | Mantodea | Coptopterygidae | Small-winged Gay´s Mantis | Mantis de Alas Cortas de Gay | Louva-a-deus de Asas Curtas de Gay | Coptopteryx gayi | Native |
