CSL Pest risk analysis for Milviscutulus mangiferae
Milviscutulus mangiferae is a polyphagous tropical scale pest and, in terms of the EU, it poses a greater threat to plants in the southern Mediterranean region than northern Europe. In the north, the scale is unlikely to establish outdoors, but may become established in ornamental nurseries or specialised aquarium/terrarium stockists. Damage to plants is likely to reduce their ornamental value and be of particular concern to nurseries and stockists where there are large numbers of potential hosts available. In southern Europe the temperatures and number of outdoor hosts increases. The scale is known to have a range of commodity crops as hosts, particularly mangoes which are grown in mainland Spain, and avocados, which are grown across the Mediterranean. Many ornamentals used in amenity planting may also be affected or act as reservoirs for this pest. A new pathway has been identified with the import of vivarium plants from Singapore and although chemical treatments are available for terrestrial plants this is not the case for those intended for aquaria due to contamination of the water. To date the policy on interception in the UK has been the destruction of these plants and this would continue to be recommended due to the potential for establishment under protection. Further investigation into the pathway, discussion with the supplier regarding the requirement of plants to be free from non-native plant pests and consideration of possible alternative plant sources is also recommended, particularly with the plants also being carriers of Bemisia tabaci.
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- United Kingdom