Symptoms on citrus tissues with associated Diaporthe species. A. Commercial lemon orchard infected by D. limonicola and D. melitensis (Malta). B–C. Trunk canker with gummosis of Citrus limon and C. sinensis plants (Malta). D. Branch canker of C. sinensis (Portugal). E–F. Twigs dieback of lemon (Italy). G. Orange twigs wither-tip with Diaporthe pycnidial formation (Italy).