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| pear root aphid (Aphis ulmi, Eriosoma inopinatum, Eriosoma lanuginosa, Eriosoma pyri, Schizoneura lanuginosum); woolly pear aphid (Aphis ulmi, Eriosoma inopinatum, Eriosoma lanuginosa, Eriosoma pyri, Schizoneura lanuginosum); wooly elm aphid (Aphis ulmi, Eriosoma inopinatum, Eriosoma lanuginosa, Eriosoma pyri, Schizoneura lanuginosum) | |||
| puceron de l 'orme et de poirier: 3 phrases in 1 subject |
| Entomology | 3 |