Complex sentence: The Fanniidae are a small (285 species in four genera) group of true flies largely confined to the Holarctic and temperate Neotropical ecozones; there are 11 Afrotropical species, 29 Oriental, and 14 Australasian.
Split into simpler sentences: The Fanniidae are a small (285 species in four genera) group of true flies largely confined to the Holarctic and temperate Neotropical regions. There are 11 Afrotropical species, 29 Oriental, and 14 Australasian.