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1983年以来,在文锦渡进口水果检疫中,从菲律宾芒果截获30多批桔小实蝇及其近似种 Dacus occipitails,同时多次在马来西亚杨桃和香港番石榴中检出桔小实蝇。在检验中,所发现的虫态均为幼虫,尤其是3龄至老熟幼虫更为常见。由于幼虫各虫龄的特征变化异常,甚至不同种类的特征也极为相似,然而造成鉴定上的困难,故有人认为,截获的幼虫要饲养出成虫后才作鉴定,但本口岸为适应形势要求,实行了“快检快放”所以幼虫的鉴定急待解决,为此,笔者对二虫常出现的虫态进行了观察及研究。
Since 1983, more than 30 batches of Dicus ocellatus and its analogous Dacus occipitails have been intercepted from mangos in the Philippines during Quarantine of Imported Fruits in Man Kam To. Jumbo orange fly flies have also been detected in many Malaysian and Hong Kong guavas. The larvae found in the test were all larvae, especially from 3rd instar to mature larvae. Because larvae vary abnormally in their age, and even different types of features are very similar, they cause identification difficulties. Therefore, some people think that intercepted larvae should be adults only after identification, but in order to meet the requirements of this port, Implementation of the “fast check fast release” Therefore, identification of larvae urgently need to be resolved, for which, the author of the two worms often appear to observe and study the state.