Genus Caccobius Thomson, 1863

Caccobius Thomson, 1863, Skand. Col., 5: 34 (Type species: Scarabaeus schreberi Linnaeus, 1767, by original designation, deposited in UZIU).

Onthophagus Raffray, 1877, Rev. Mag. Zool., 40: 321.

Subg. Caccophilus Jekel, 1872, Rev. Mag. Zool., 23(2): 410.

Subg. Cacconemus Jekel, 1872, Rev. Mag. Zool., 23(2): 418.

Subg. Tomogonus D’Orbigny, 1904, Ann. Mus. Civ. Genova, 41: 254.

Key to species of Caccobius from Hong Kong.

1 Body length of 2.5–3.0 mm, male head with one horn ....................................... Caccobius (Caccophilus) unicornis Fabricius, 1798

Body length of 4.5–5.5 mm, male head without horn........................................... Caccobius (Caccophilus) brevis Waterhouse, 1875