It is a family of insects of the order Lepidoptera.
The Hepialidae are the most diverse group dell'infraordine Exoporia.
There are at least 60 genera and 587 species currently recognizedrecorded worldwide.
The family Hepialidae is considered primitive, due to a series of structural differences compared to other moths among which the most obvious are
the antennas very short and the lack of a proboscis functional. Moths are primarily crepuscular.