After Bechly, 1998-2002, with Recent species from Schorr, Lindeboom & Paulson, 2003

<==o Idionychidae Tillyard & Fraser, 1940
   |== other genera [Bechly, 1998-2002c]
   `--o Idionyx Hagen, 1867
     |-- I. burliyarensis Fraser, 1922 [Hemicordulia delicata Martin, 1896; Idionyx nilgiriensis Fraser, 1922]
     |-- I. carinata Fraser, 1926 [Idionyx lieftincki Zhou, 1984]
     |-- I. claudia Ris, 1912
     |-- I. corona Fraser, 1921
     |-- I. galeata Fraser, 1924
     |-- I. iida Hämäläinen, 2002
     |-- I. imbricata Fraser, 1926
     |-- I. intricata Fraser, 1926
     |-- I. laidlawi Fraser, 1936
     |-- I. minima Fraser, 1931
     |-- I. montana Karsch, 1891
     |-- I. murcia Lieftinck, 1971
     |-- I. nadganiensis Fraser, 1924
     |-- I. nilgiriensis (Fraser, 1918) [Phyllomacromia nilgiriensis Fraser, 1918]
     |-- I. optata Selys, 1878
     |-- I. orchestra Lieftinck, 1953
     |-- I. periyashola Fraser, 1939
     |-- I. philippa Ris, 1912
     |-- I. rhinoceroides Fraser, 1934
     |-- I. saffronata Fraser, 1921
     |-- I. salva (Needham & Gyger, 1937) [Idiophya salva Needham & Gyger, 1937]
     |-- I. selysi Fraser, 1926
     |-- I. stevensi Fraser, 1924
     |-- I. thailandica Hämäläinen, 1985
     |-- I. travancorensis Fraser, 1931
     |-- I. unguiculata Fraser, 1926
     |-- I. victor Hämäläinen, 1991
     |-- I. yolanda Selys, 1871 [Idionyx dohrni Krüger, 1899]
     `-- I. yunnanensis Zhou, Wang, Shuai & Liu, 1994

Note:

Family Idionychidae was inclued to family Corduliidae by Schorr, Lindeboom & Paulson, 2003

Reference(s):