| Thecla lycus Skinner, 1898 |
| Thecla lyde Godman & Salvin, 1887 |
| Thecla lydia Kirby, 1871 |
| Thecla madie Weeks, 1906 |
| Thecla maeonis Godman & Salvin, 1887 |
| Thecla maevia Godman & Salvin, 1887 |
| Thecla marialis Clench, 1944 |
| Thecla marius Lucas, 1857 |
| Thecla mathewi Hewitson, 1874 |
| Thecla megamede Prittwitz, 1865 |
| Thecla mesca Dyar, 1914 |
| Thecla mimula Draudt, 1920 |
| Thecla minniles Dyar, 1916 |
| Thecla minthe Godman & Salvin, 1887 |
| Thecla mirabelle Barnes, 1900 |
| Thecla miranda Godman & Salvin, 1887 |
| Thecla miserabilis Clench, 1946 |
| Thecla muiri Edwards, 1881 |
| Thecla mulucha Hewitson, 1867 |
| Thecla muridosca Dyar, 1918 |