Sigmodontomys aphrastus Tanyuromys aphrastus, known as the long-tailed sigmodontomys,[2] Harris's rice water rat,[1] or the long-tailed rice rat,[3] is a species of rodent in the family Cricetidae.

It is known from Costa Rica, Panama, and Ecuador.

[1] In 2012, it was reassigned to its current genus from Sigmodontomys.

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