广聚萤叶甲成虫的形态特征

Morphological characteristics of Ophraella communa adults

广聚萤叶甲(Ophraella communa LeSage)是我国近几年来发现的一种重要的豚草(Ambrosia artemisiifolia Linn.)天敌。鉴于该叶甲在豚草生物防治上的重要性,本文在前人研究的基础上,对其成虫的形态特征进行了详细描述,并介绍了区别雌雄虫的重要外部特征。认为雄虫生殖节端部有倒"V"形的黑斑,而雌虫无"V"形黑斑。这对于进一步深入开展该叶甲的生物学、生态学及其应用研究具有重要意义。

In recent years, Ophraella communa LeSage, an important herbivorous natural enemy of the invasive weed Ambrosia artemisiifolia Linn. has occurred in China. Owing to the importance of this leaf beetle for biologi- cal control of A. artemisiifolia, the morphological characteristics of adult beetles were described based on our observations. We found that there was a ＂V＂ stripe at the end of genital abdominal segment of males, but no ＂V＂ stripes at the corresponding parts of females. It is important to study the biology, ecology and application of this leaf beetle in the future.