| france | aquitaine region | alnus glutinosa | alnus glutinosa | alder yellows phytoplasma | alder yellows phytoplasma | 10 | 0 |
| france | languedoc-roussillon region | alnus glutinosa | alnus glutinosa | alder yellows phytoplasma | alder yellows phytoplasma | 1 | 0 |
| germany | | alnus glutinosa | alnus glutinosa | alder yellows phytoplasma | alder yellows phytoplasma | 1 | 0 |
| italy | | alnus glutinosa | alnus glutinosa | alder yellows phytoplasma | alder yellows phytoplasma | 1 | 0 |
| italy | friuli-venezia giulia autonomous region | alnus glutinosa | alnus glutinosa | alder yellows phytoplasma | alder yellows phytoplasma | 1 | 0 |
| lithuania | | alnus glutinosa | alnus glutinosa | alder yellows phytoplasma | alder yellows phytoplasma | 1 | 0 |