The carrot rust fly, Psila rosae F., is a major pest of carrots, Daucus carota L. (Apiaceae), in the principal production areas of Newfoundland, Quebec, Ontario, and British Columbia (Boivin 1994), as well as in temperate Europe and New Zealand (Ellis and Hardman 1992). Larvae cause damage by tunneling into the roots (Boivin 1994), reducing both yield and marketability. The insect was first recorded in Canada in 1885 but was not reported in Newfoundland until the 1930s (McClanahan and Niemczyk 1963). By the 1950s, P. rosae had spread from an initial infestation around St. John's to commercial farms and home gardens throughout the carrot-growing areas of Bonavista and Conception bays in eastern Newfoundland (Boivin 1994).
胡萝卜锈蝇(Psila rosae F.)是纽芬兰、魁北克、安大略和不列颠哥伦比亚主要产区胡萝卜(Daucus carota L.)(Apiaceae)的主要害虫(Boivin 1994),也是温带欧洲和新西兰的主要害虫(Ellis 和 Hardman 1992)。幼虫钻入根部造成损害(Boivin 1994 年),降低了产量和销路。这种昆虫于 1885 年首次在加拿大被记录,但直到 20 世纪 30 年代才在纽芬兰被报道(McClanahan 和 Niemczyk,1963 年)。到 20 世纪 50 年代,P. rosae 已经从最初的圣约翰附近的虫害蔓延到纽芬兰东部 Bonavista 和 Conception 海湾的整个胡萝卜种植区的商业农场和家庭菜园(Boivin 1994 年)。