Megathymus Scudder, 1872
Megathymus coloradensis arizonae Tinkham, 1954
Megathymus coloradensis subsp. coloradensis Riley, 1875
Megathymus coloradensis martini Stallings & Turner, 1956
Megathymus coloradensis reinthali Freeman, 1963
Megathymus coloradensis reubeni Stallings, Turner & Stallings, 1963
Megathymus coloradensis wilsonorum Stallings & Turner, 1958
