| Ixodiphagus Howard, 1907 |
| Ixodiphagus caniphila (Risbec, 1951) |
| Ixodiphagus caucurtei Buysson, 1912 |
| Ixodiphagus hookeri (Howard, 1908) |
| Jurinia Costa, 1839 |
| Kaszabicyrtus Szelényi, 1971 |
| Krishnieriella Mani, 1935 |
| Krishnieriella annulatus Timberlake, 1919 |
| Krishnieriella primus (Howard, 1898) |
| Lepidaphycus Blanchard, 1936 |
| Lepidoneurus Hoffer, 1957 |
| Leptanusia De Santis, 1964 |
| Leptomastidea Mercet, 1916 |
| Leptomastidea abnormis (Girault, 1915) |
| Leptomastidea aurantiaca Mercet, 1916 |
| Leptomastidea jeanneli Mercet, 1924 |
| Limastotix Mercet, 1921 |
| Liocarus Thomson, 1876 |
| Lirencyrtus Noyes, 1980 |
| Lirencyrtus primus Noyes, 1980 |