RHAN BPlâu planhigion y gwyddys eu bod yn bresennol yn yr Undeb Ewropeaidd
Pryfed, gwiddon a nematodau
1. Bemisia tabaci Genn. (poblogaethau Ewropeaidd)
2. Bursaphelenchus xylophilus (Steiner a Bührer) Nickle et al.
3. Dryocosmus kuriphilus Yasumatsu
4. Globodera pallida (Stone) Behrens
5. Globodera rostochiensis (Wollenweber) Behrens
6. Leptinotarsa decemlineata Say
7. Meloidogyne chitwoodi Golden et al. (pob poblogaeth)
8. Meloidogyne fallax Karssen
9. Opogona sacchari (Bojer)
10. Popillia japonica Newman
11. Rhizoecus hibisci Kawai a Takagi
12. Spodoptera littoralis (Boisduval)
13. Thaumetopoea processionea L
14. Trioza erytreae Del Guercio
Bacteria
1. Clavibacter michiganensis (Smith) Davis et al. ssp. sepedonicus (Spieckermann a Kotthoff) Davis et al.
2. Ralstonia solanacearum (Smith) Yabuuchi et al.
3. Xylella fastidiosa (Wells et al.)
Ffyngau
1. Chalara fraxinea T. Kowalski, gan gynnwys ei deleomorff Hymenoscyphus pseudoalbidus
2. Melampsora medusae Thümen
3. Synchytrium endobioticum (Schilbersky) Percival
Firysau ac organeddau sy’n debyg i firysau
1. Mycoplasm ymlediad afalau
2. Mycoplasma crychni’r dail clorotig bricyll
3. Candidatus Phytoplasma ulmi
4. Mycoplasm dirywiad gellyg