The following links provide collections of pictures showing symptoms associated with the presence of Xylella fastidiosa in susceptible host plants in the different Countries where the pathogen is known to occur
Overview on the symptoms of major diseases caused by X. fastidiosa worldwide:
Symptoms associated with the infections in southern Italy:
Symptoms associated with the infections in the Balearic Islands and mainland Spain:



EPPO global database (Source: EPPO)
Diagnostic de Xylella fastidiosa
(Source: Ministry of Agriculture of France)
Xylella fastidiosa: fiche de reconnaissance des symptomes
(Source: ANSES)
Enfermedades causadas por la bacteria Xylella fastidiosa (Source: Publ. Cajamar)
Corso di formazione per il monitoraggio alla Xylella fastidiosa “Training course for the monitoring of Xylella”
(Source: www.emergenzaxylella.it)
Xylella fastidiosa sottospecie Pauca ceppo CoDiRO – Piante ospiti “Host plants for Xylella, subspecies Pauca”
(Source: www.emergenzaxylella.it)
Photo gallery of the symptoms associated to Xylella in Apulia
(Source: IPSP-CNR; UNIBA)
Photo gallery of the symptoms associated to Xylella in Spain
(Source: CSIC-IAS; IVIA; GOIB)