species from the Wikipedia

<==o Tetraphalerus
   |-- T. antiquus Ponomarenko, 1964
   |-- T. bontsaganensis Ponomarenko, 1997
   |-- T. brevicapitis Pononarenko & Martinez-Delclos, 2000
   |-- T. brevis Ponomarenko, 1964
   |-- T. bruchi Heller, 1913
   |-- T. collaris Ponomarenko, 1997
   |-- T. fentaiensis (Ren, 1995)
   |-- T. glabratus Ponomarenko, 1997
   |-- T. grandis Ponomarenko, 1964
   |-- T. incertus Ponomarenko, 1969
   |-- T. laetus Lin Qibin, 1976
   |-- T. largicoxa Lin Qibin, 1986
   |-- T. longicollis Ponomarenko, 1997
   |-- T. macilentus (Ren, 1995)
   |-- T. maximus Ponomarenko, 1968
   |-- T. mongolicus Ponomarenko, 1986
   |-- T. notatus Ponomarenko, 1997
   |-- T. okhotensis Ponomarenko in Cromov et al., 1993
   |-- T. oligocenicus (Crowson, 1962)
   |-- T. penalveri Soriano & Delclòs, 2006
   |-- T. ponomarenkoi Soriano & Delclòs, 2006
   |-- T. surrectus (Ren, 1995)
   |-- T. tenuipes Ponomarenko, 1964
   |-- T. verrucosus Ponomarenko, 1966
   `-- T. wagneri Waterhouse, 1901

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