Trioza erytreae (Del Guercio) (Hemiptera: Triozidae) vectors the most important citrus disease, namely huanglongbing (HLB) or citrus greening. This vector has been recently found on the European mainland in the north‐western region of the Iberian Peninsula (Spain and Portugal), although HLB has not yet been detected in Europe. Thus, preventing the spread of the vector is currently an urgent priority. Here, we show two prevention methods to avoid the spread of this psyllid from areas where it is present to psyllid‐free areas. Our results showed that two types of anti‐insect mesh with a pore size of 0.4 × 0.77 mm² and 0.27 × 0.77 mm² were effective in excluding T. erytreae in two field experiments. These results have direct implications in the nursery plant production system, which should adopt meshes with pore sizes small enough to guarantee the exclusion of T. erytreae. Additionally, we evaluated the longevity of T. erytreae on fruit to understand the risk of dispersion of the psyllid with unprocessed fruit movement between infested and non‐infested areas. The longevity of T. erytreae on mandarin and lemon fruit under winter conditions (13.8°C and 85.4% of relative humidity) was 11 days for both fruits. We anticipate that our results could help enhance the preventive measures in citrus fruit areas without a presence of T. erytreae.

中文翻译：

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预防措施，限制红木Trioza erytreae（Del Guercio）（半翅目：Triozidae）在欧洲大陆的扩散

红木Trioza erytreae（Del Guercio）（半翅目：Triozidae）携带最重要的柑橘病，即黄龙病（HLB）或柑橘绿化。尽管在欧洲尚未发现HLB，但最近在伊比利亚半岛西北部地区（西班牙和葡萄牙）的欧洲大陆上发现了该载体。因此，当前防止载体扩散是当务之急。在此，我们展示了两种预防方法，可避免该木虱从其存在的区域扩散到无木虱的区域。我们的结果表明，两种类型的孔径为0.4×0.77 mm ²和0.27×0.77 mm ^2的防虫网可有效地排除红斑杜鹃。在两个野外实验中。这些结果对苗圃生产系统具有直接的意义，该系统应采用孔径足够小以确保排除紫锥菊的网眼。此外，我们评估了紫锥菊在水果上的寿命，以了解在未受侵染和未受侵染的区域之间未经加工的果实移动而引起木虱扩散的风险。在冬季条件下（13.8°C和85.4％的相对湿度），普通话和柠檬果实上的红麦草的寿命均为11天。我们预计，我们的研究结果可以帮助在没有T. erytreae的柑橘类水果地区加强预防措施。