Jerarquía taxonómica:
Scarabaeidae → Ligyrus (Ligyrus) gibbosus De Geer, 1774

Familia:
Scarabaeidae

Autor:
De Geer, 1774

Sinónimos:
Ligyrus californicus Casey, 1909
Ligyrus spissipes Casey, 1909
Ligyrus effetus Casey, 1915
Ligyrus arizonensis Casey, 1915
Ligyrus brevipes Casey, 1915
Ligyrus laevicauda Casey, 1915
Ligyrus laticollis Casey, 1915
Ligyrus scitulus Casey, 1915