Tube-Tailed Thrips Killing Hibiscus: Vector for Plant Disease?

Excellent photos show tube-tailed thrips (Heliothrips haemorrhoidalis) — dark females, red immatures — on hibiscus trunks and woody stems. Leaves yellowing in 2–3 weeks suggests virus transmission (thrips vector tospoviruses like INSV, TSWV).

Action Plan

1. Confirm thrips ID with local Extension (sample in alcohol).
2. Test for virus — send symptomatic leaves to plant diagnostic lab (e.g., UF/IFAS, state lab).
3. Control thrips: Spinosad (Captain Jack's) or spinetoram — translaminar, reaches thrips in crevices. Rotate modes of action. See thrips info.
4. Remove heavily infected plants to reduce inoculum.
5. Weed control — thrips breed on weeds.

Note

Horticultural oils/soaps give poor control on woody bark. Systemics (imidacloprid) work but may not stop virus transmission fast enough.

30-year horticulturist's observation = valuable. Act fast.