Parrellathrips ullmanae gen. et sp. nov. is described from California in th
e Fauriellidae, a family previously known only from southern Europe and Sou
th Africa. Heratyrhrips sauli gen. et sp. nov, is described from California
in the Adiheterothripidae, a family known only from western USA and the Me
diterranean and Indian areas. Cladistic analysis of character states in the
se and related taxa indicates that the present family classification in the
lower clades of the Thysanoptera is not strongly supported.