The relationships of the endemic Australian genus Lenophila Guérin (=Celetor Loew) are discussed, together with some details of the subfamily classification of the Platystomatidae. It is concluded that Lenophila is a rather isolated genus with some resemblance to the Scholastinae.
A key to the 6 species of Lenophila is given. L. achilles, L. secta, L. danielsi, and L. nila are described as new species.
Some notes are given on the biology of the species, including the apparent larval association with Eucalyptus in L. dentipes and the adult and larval association with Xanthorrhoea in other species.
The alimentary system and the internal reproductive systems of male and female are described.