深圳危害榕属植物的舞蛾科害虫的发生及鉴定

Occurrence and identification of a Choreutidae pest on Ficus L.in Shenzhen

于2022年4月至11月,在深圳市多个住宅小区绿地调查发现1种危害榕属植物的舞蛾科害虫,采集其幼虫,在室内饲养至羽化,观察各虫态形态特征并进行初步鉴定,对其线粒体COⅠ基因部分序列进行扩增,结合形态特征与分子数据,鉴定该虫为交织桑舞蛾(Choreutis emplecta(Turner))。调查其寄主植物、发生及为害情况,发现该虫主要危害黄金榕,在小叶榕、垂叶榕和金钱榕上有零星发生;4—11月均可见该虫幼虫,9月幼虫虫口密度稍高,4—5月、8—9月和11月可见该虫成虫。

From April to November in 2022,green lands in various residential districts in Shenzhen city were investigated,the authors found a Choreutidae pest on Ficus L.,and the larvae were collected and reared indoors to adults.The morphological characteristics were observed for preliminary identification,and the partial mitochondrial CO Ⅰsequence was amplified and sequenced.Based on the morphological characteristics and molecular data,the pest was identified as Choreutis empletita(Turner).The preliminary investigation on the host plants and their occurrence was carried out in green lands of various residential districts in Shenzhen.The results showed that Choreutis empletita(Turner) occurred mainly on Ficus microcarpa L.cv Golden Leaves and sporadically on Ficus concinna(Miq.) Miq.,Ficus benjamina L.and Ficus deltoidea Jack.The larvae can be seen from April to November.The density of larvae was slightly higher in September.Adults can be seen from April to May,August to September,and November.