Western flower thrips transmits the carmovirus Pelargonium flower break virus (PFBV), the ilarvirus Tobacco streak virus (TSV), and the tospoviruses Chrysanthemum stem necrosis virus (CSNV), Groundnut ringspot virus (GRSV), Impatiens necrotic spot virus (INSV), Tomato chlorotic spot virus (TCSV), and Tomato spotted wilt virus (TSWV). This species is primarily a flower feeder, so most damage would be expected on the flower or fruit. Learn to identify the western flower thrips with this two-page illustrated guide written by Jeffrey D. Cluever and Hugh A. Smith and published by the Department of Entomology and Nematology.
http://edis.ifas.ufl.edu/in1127