| Sigmodon arizonae Mearns, 1890 |
| Sigmodon arizonae subsp. cienegae Howell, 1919 |
| Sigmodon arizonae subsp. major Bailey, 1902 |
| Sigmodon baileyi J. A. Allen, 1903 |
| Sigmodon berlandieri Baird, 1855 |
| Sigmodon colimae J. A. Allen, 1897 |
| Sigmodon fulviventer J. A. Allen, 1889 |
| Sigmodon fulviventer subsp. fulviventer J. A. Allen, 1889 |
| Sigmodon fulviventer subsp. melanotis Bailey, 1902 |
| Sigmodon fulviventer subsp. minimus J. A. Allen, 1895 |
| Sigmodon guerrerensis E. W. Nelson & Goldman, 1933 |
| Sigmodon hirsutus (Burmeister, 1854) |
| Sigmodon hispidus Say & Ord, 1825 |
| Sigmodon hispidus subsp. arizonae Mearns, 1890 |
| Sigmodon hispidus subsp. atratus Hall, 1949 |
| Sigmodon hispidus subsp. baileyi Bailey, 1902 |
| Sigmodon hispidus subsp. berlandieri J. A. Allen, 1890 |
| Sigmodon hispidus subsp. cienegae Howell, 1919 |
| Sigmodon hispidus subsp. colimae J. A. Allen, 1897 |
| Sigmodon hispidus subsp. eremicus Mearns, 1897 |