Background Psyllids are oligophagous phytophagous insects with many specialist willow (Salix spp.) feeding species in two genera (Cacopsylla and Bactericera). We examine the patterns of distribution and co-occurrence of willow-feeding species at 42 willow sites across Europe forming a transect from Greece (lat. 38.8 °N) to arctic Norway (lat. 70.6 °N). The transect and sites have been described in previous papers. New information A total of 1245 individual psyllids were examined from 23 species of willow over the transect, representing 17 willow-feeding species (11 Cacopsylla and 6 Bactericera). Numerous species were very widely distributed, with two species, Bactericera albiventris (Foerster, 1848) and Cacopsylla pulchra (Zetterstedt, 1840), occurring from Greece to Finland. Other widespread species (Romania to Finland) were Cacopsylla ambigua (Foerster, 1848) and Bactericera curvatinervis (Foerster, 1848). The mean number of psyllid species per site was 2.4 (1.3 Cacopsylla, 1.1 Bactericera).

中文翻译：

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欧洲柳样带：从希腊到挪威北极的食柳木虱（半翅目：木虱总科）的分布模式。


背景 木虱是寡食性植食性昆虫，以两个属（Cacopsylla 和 Bactericera）的许多专门的柳树（Salix spp.）为食。我们研究了欧洲 42 个柳树地点的柳树饲养物种的分布和共现模式，这些柳树地点形成了从希腊（北纬 38.8°）到北极挪威（北纬 70.6°）的横断面。样线和地点已在之前的论文中描述过。新信息 在样带上的 23 种柳树中总共检测了 1245 只木虱，代表 17 种柳树食性物种（11 种木虱属和 6 种细菌属）。许多物种分布非常广泛，其中有两个物种：Bactericera albiventris (Foerster, 1848) 和 Cacopsylla pulchra (Zetterstedt, 1840)，分布在从希腊到芬兰的地区。其他广泛分布的物种（罗马尼亚至芬兰）是Cacopsylla ambigua（Foerster，1848）和Bactericera curvatinervis（Foerster，1848）。每个地点的木虱物种平均数量为 2.4 个（1.3 个木虱属，1.1 个细菌属）。