8 spp. (6 of Diastata
and 2 of Campiochoeta
) in our area, ~50 spp. in 4 genera total(1)(2)
worldwide except Australasia, most diverse in Eurasia(1)
a small family, with very little information available on the web other than species lists
The genus Campichoeta is often treated in a separate family, Campichoetidae.