The gracillariidae are an important family of moths and is probably the main between the leaf miners.
There are 98 kinds of gracillariidae described. A complete list of all the species currently recognized is available on (de Prins and de Prins 2005).
Many tropical species and afrotropical are not described but there is an online catalog, in continuous implementation, currently available.
These moths are typically small (wingspan of 5-20 mm).
Subfamilies differ in the basic position of the adult moth (Davis and Robinson, 1999).
The Gracillariinae with the front of the body steeply raised; Lithocolletinae and Phyllocnistinae rest with the body parallel to the surface;
in Lithocolletinae often with the head it is lowered.