Glossata also contains the division  Ditrysia , which contains 98% of all described species in Lepidoptera. [22] :569 Aglossata  it is the second most primitive  lineage  of lepidoptera; being first described in 1952 by  Lionel Jack Dumbleton .  Agathiphagidae and  Heterobathmiidae  are the only families in Aglossata. Agathiphagidae only contains about