| Monarthrum granulatum Bright, 1972 |
| Monarthrum hoegei (Blandford, 1904) |
| Monarthrum huachucae Wood, 1959 |
| Monarthrum laterale (Eichhoff, 1869) |
| Monarthrum lobatum (Ferrari, 1867) |
| Monarthrum luctuosum (Blandford, 1904) |
| Monarthrum morsum Wood, 1974 |
| Monarthrum pennatum (Schedl, 1963) |
| Monarthrum pseudoscutellare (Schedl, 1935) |
| Monarthrum quercicolens Wood, 1967 |
| Monarthrum quercum (Wood, 1967) |
| Monarthrum querneum Wood, 1967 |
| Monarthrum robustum (Schedl, 1966) |
| Monarthrum scutellare (LeConte, 1860) |
| Monarthrum tetradontium Wood, 1974 |
| Monarthrum umbrinum (Blandford, 1904) |
| Monarthrum validum (Ferrari, 1867) |
| Monarthrum xalapensis Wood, 1987 |
| Myrmex Sturm, 1826 |
| Myrmex adspersus (Champion, 1903) |