New data concerning quarantine pests
By browsing through the literature, the EPPO Secretariat has extracted the following new data concerning quarantine pests.
New geographical records
During a survey carried out in rice fields of north and south-western Sierra Leone and in the Coyah district of Guinea, Aphelenchoides besseyi (EPPO A2 quarantine pest) has been found. The EPPO Secretariat had previously no data on the occurrence of A. besseyi in Guinea. Nematological Abstracts, 66(3), p 179 (1270).
Tilletia indica (EPPO A1 quarantine pest) was detected on wheat spikes and kernels from Kerman, in the southern part of Iran. This is the first record of T. indica in Iran. Review of Plant Pathology, 76(11), p 1141 (8808).
During 1992-93, in Bolivia (in the Valle Alto, Cochabamba), Pantoea stewartii subsp. stewartii and Erwinia chrysanthemi (both EPPO A2 quarantine pests) were found in association with symptoms of bacterial wilt of maize. According to the EPPO Secretariat, this is the first report of these bacteria in Bolivia. Review of Plant Pathology, 76(10), p 1030 (7950).
A survey was carried out in 1994-95 in southern Ontario, Canada, on landscape trees to detect leaf scorch caused by Xylella fastidiosa (EPPO A1 quarantine pest). By using PCR techniques, X. fastidiosa was identified in three samples from Ulmus americana. All these trees were located within the Niagara Peninsula. This is the first report for Ontario, but also for Canada, and it represents the most northerly distribution of X. fastidiosa-infected trees in eastern North America. Review of Plant Pathology, 76(11), p 1196 (9234).
New detailed records
Amauromyza maculosa (EPPO A1 quarantine pest) is present in Florida (US). For United States, PQR indicates that this leafminer is present in eastern states (and Hawaii) but without further details. Review of Agricultural Entomology, 85(11), p 1392 (10936).
During field studies on insect pests of Eugenia stipitata, carried out near Iquitos (Peru) Anastrepha obliqua (EPPO A1 quarantine pest) was found. Review of Agricultural Entomology, 85(10), p 1233 (9750).
Listronotus bonariensis (EPPO A1 quarantine pest) is reported attacking wheat shoots in Argentina in 1995, although this pest had not been seen in the country since 1972. Review of Agricultural Entomology, 85(10), p 1213 (9598).
Malacosoma disstria (EPPO A1 quarantine pest) occurs in Alberta, Canada. Review of Agricultural Entomology, 85(11), p 1377 (10830).
Ralstonia solanacearum (EPPO A2 quarantine pest) has been identified from wilted potatoes and their tubers in Pakistan (Utror, Miandam, Bajna and Kalam valley). It is felt that further surveys are needed to assess the incidence and severity of the disease in potato-growing areas of the country. Review of Plant Pathology, 76(10), p 1048 (8095).
Xanthomonas fragariae (EPPO A2 quarantine pest) was observed for the first time in 1991 in North Carolina (US), in commercial fields. [Ritchie, D.F.; Averre, C.W.; Milholland, R.D. (1993) First report of angular leaf spot, caused by Xanthomonas fragariae, on strawberry in North Carolina. Plant Disease, 77(12), p 1263.]
EPPO Secretariat, 1997-10.