Abstract The mammals of Paraguay are still poorly known. We report a new genus for the country, Abrawayaomys, a spiny cricetid rodent endemic for the Interior Atlantic Forest. This record extends the distribution of the genus approximately 100 km, and west of the Paraná River. This addition increases the number of mammals in Paraguay to 184 and verifies that rodents are the most diverse group of mammals in the country. We outline identifying morphological characters of Abrawayaomys and elaborate on the significance of this finding for conservation and biogeography in the region.

中文翻译：

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巴拉圭新属记录的发现，大西洋森林特有啮齿动物，Abrawayaomys（仓鼠科，Sigmodontinae）

摘要 巴拉圭的哺乳动物仍然鲜为人知。我们报告了该国的一个新属，Abrawayaomys，这是一种内陆大西洋森林特有的多刺蝓类啮齿动物。该记录将该属的分布扩展到巴拉那河以西约 100 公里。这一增加使巴拉圭的哺乳动物数量增加到 184 只，并证实啮齿动物是该国最多样化的哺乳动物群。我们概述了识别 Abrawayaomys 的形态特征，并详细阐述了这一发现对该地区保护和生物地理学的意义。