Hesperiidae Latreille, 1809
Megathymus bazelae Stallings & Turner, 1958
Megathymus beulabae Stallings & Turner, 1958
Megathymus cofaqui Strecker, 1876
Megathymus coloradensis Riley, 1875
Megathymus deserti Ronald et al., 1972
Megathymus gayleae Stallings, Turner & Stallings, 1963
Megathymus harrisi Freeman, 1955
Megathymus leussleri Holland, 1931
Megathymus streckeri Skinner, 1895
Megathymus texana Barnes & McDunnough, 1912
Megathymus ursus Poling, 1902
Megathymus violae Stallings & Turner, 1956
Megathymus yuccae Boisduval & Le Conte, 1833
