<==o Harpolithobius Verhoeff, 1904
   |-- H. adontus (Chamberlin, 1952)
   |-- H. andreevi Matic & Stavropoulos, 1988 [Harpolithobius anodus (Latzel, 1880) in partim]
   |-- H. augens (Chamberlin, 1952)
   |--o H. banaticus Matic, 1961
   |  `-- H. b. rhodopensis Kaczmarek, 1975
   |-- H. beroni Matic & Stavropoulos, 1988 [Harpolithobius anodus (Latzel, 1880) in partim]
   |-- H. birsteini Zalesskaya, 1972
   |-- H. calcivagus Verhoeff, 1925
   |-- H. dentatus (Matic, 1957)
   |-- H. erraticus (Chamberlin, 1952)
   |-- H. folkmanovae Kaczmarek, 1975
   |-- H. halophilus Verhoeff, 1941
   |-- H. intermedius Matic, 1958
   |-- H. oltenicus Negrea, 1962
   |-- H. osellai Matic, 1983
   |-- H. polonezenus (Chamberlin, 1952)
   |-- H. radui (Matic, 1955)
   |-- H. samothrakiensis Matic & Stavropoulos, 1988 [Harpolithobius anodus (Latzel, 1880) in partim]
   |-- H. secutus (Chamberlin, 1952)
   |-- H. thasosensis Matic & Stavropoulos, 1988
   |-- H. triacanthos Matic, 1964
   |-- H. tridentatus Matic, 1962
   `-- H. vignatagliantii Zapparoli, 1889

Reference(s):

Special thanks to:

Jos Dols, for gathering this information.