This species is discussed under E. ehrhornii, of which it is possibly a synonym.
The arrangement of setae on the seventh abdominal sternite is variable in the available specimens, including paratype females.
The genus Ewartithrips was proposed for six species from California, although separation of this from the Mediterranean genus Tenothrips has been questioned (Bhatti, 2003).
Ewartithrips californicus Nakahara
No information, presumably breeding in flowers.
Collected from plants in several families.