Leprosis

A severe viral disease of citrus, transmitted mostly by the tenuipalpid Brevipalpus phoenicis. It causes chlorotic lesions that turn black on the leaves, twigs and fruit of oranges and mandarins, along with leaf and fruit drop.

Reference

Jaeger, M. (and 22 co-authors) 2017. Pest categorisation of Citrus leprosis viruses. EFSA Journal 15: e05110, 1-32..