Isthmomys pirrensis (rodent)
Habitats: tropical/subtropical moist broadleaf forest (1)
only
Found in one sample
Nicaragua: Siuna (mammals, primary forest)
Size measurements:
| condylobasal length | 38.1 mm | N = 6 | Goldman 1912 |
| ♂ hind foot length | 35.5 mm | N = 1 | Goldman 1912 |
| hind foot length | 36 mm | N = 6 | Goldman 1912 |
| skull length | 42.3 mm | N = 6 | Goldman 1912 |
| skull width | 20.6 mm | N = 6 | Goldman 1912 |
| ♂ tail length | 185 mm | N = 1 | Goldman 1912 |
| tail length | 197 mm | N = 6 | Goldman 1912 |
| ♂ total body length | 348 mm | N = 1 | Goldman 1912 |
| total body length | 356 mm | N = 6 | Goldman 1912 |
| upper tooth row length | 6.1 mm | N = 6 | Goldman 1912 |
See also Isthmomys