First report of Neotoxoptera formosana in Italy
In July 2000, Neotoxoptera formosana (EPPO Alert List) was reported for the first time in Italy. The onion aphid was found in Oppeano near Verona (Veneto) on chives (Allium schoenoprasum) grown under glasshouse as a continuous crop. Rather high aphid populations were observed and affected plants showed wilting, yellowing and desiccation of the leaves. In their paper, the authors are also giving a few morphological details in order to separate N. formosana from other relative species present in Italy and in other countries of Southern Europe (N. oliveri and N. violae). The situation of N. formosana in Italy can be described as follows: Present: found only in glasshouses near Verona, Veneto.
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Note: In this paper, the presence of N. formosana was also reported in Canada, Mexico, USA (California, New York, North Carolina, Pennsylvania) and Papua New Guinea. The EPPO Secretariat had previously no data on the presence of the onion aphid in these countries or US States.
Sources
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Barbagallo, S.; Ciampolini, M. (2000) The onion aphid, Neotoxoptera formosana (Takahashi), detected in Italy.
Bolletino di Zoologia Agraria et di Bachicoltura, Serie II, 32(3), 245-258.
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