The apple leaf midge, Dasineura mali (Kieffer) (Diptera: Cecidomyiidae), an invasive alien pest established for many years in Nova Scotia, Canada, has invaded Ontario and British Columbia, Canada apple (Malus domestica Borkhausen; Rosaceae) orchards, damaging growing tips of trees. Molecular analysis indicated that Nova Scotia populations are genetically different from Ontario and British Columbia populations. Pheromone trap captures, oviposition on growing apple terminals, and the incidence of third instars indicate three D. mali generations in each province. Platygaster demades Walker (Hymenoptera: Platygastridae), released in Nova Scotia in 1993, parasitised 34% of the third midge generation in that province and was reared from D. mali for the first time in 2016 in the Fraser Valley of British Columbia. Lyrcus nigroaeneus Ashmead (Hymenoptera: Pteromalidae) parasitised up to 21% of D. mali in southwestern Ontario. Synopeas myles (Walker) (Hymenoptera: Platygastridae) was recorded from D. mali for the first time, one specimen in each of Nova Scotia and Ontario, and was the most important parasitoid in British Columbia. Synopeas myles parasitism in Okanagan and Similkameen, British Columbia orchards increased from 0% to a mean of 30% of D. mali larvae from 2014 to 2016. Other minor parasitoids included Platygaster tuberosula Kieffer (Hymenoptera: Platygasteridae) in all three provinces and Aphanogmus vicinus Förster (Hymenoptera: Ceraphronidae) in British Columbia.

苹果叶mid，Dasineura mali（Kieffer）（双翅目：Cecidomyiidae）是一种在加拿大新斯科舍省建立了多年的入侵性外来害虫，已经入侵了加拿大安大略省和不列颠哥伦比亚省的苹果（Malus domestica Borkhausen；蔷薇科）果园，破坏了果园的生长。树木的提示。分子分析表明，新斯科舍省的种群与安大略省和不列颠哥伦比亚省的种群在遗传上有所不同。信息素诱捕器捕获，在正在生长的苹果终端上产卵，并且第三龄的发生表明在每个省中有三代马来酸杆菌。Platygaster demades Walker（膜翅目：Platygastridae）于1993年在新斯科舍省发行，寄生了该省第三代蚊的34％，并从D. mali于2016年首次出现在不列颠哥伦比亚省的弗雷泽谷。Lyrcus nigroaeneus蜂（膜翅目：金小蜂科）寄生于高达21％D.马里安大略省西南部。首次从马来酸杆菌（D. mali）上记录了滑豆（Wyker）（膜翅目：鸭嘴兽科），新斯科舍省和安大略省各有一个标本，是不列颠哥伦比亚省最重要的寄生虫。从2014年到2016年，不列颠哥伦比亚省Okanagan和Similkameen的Synopea myles寄生虫从0％增至平均30％的D. mali幼虫。其他次寄生虫包括Platygaster tuberosula这三个省的基弗（膜翅目：Platygasteridae）和不列颠哥伦比亚省的Aphanogmus vicinusFörster（膜翅目：Ceraphronidae）。