危害莼菜的几种摇蚊幼虫

莼菜为长江中下游地区民众喜爱的菜肴,具有较高的营养价值。本文重点叙述主要危害莼菜的三带环足摇蚊Cricotopus trifasciatur(Panzer)幼虫,记述了这种幼虫的特征和生长环境以及这类幼虫危害莼菜的过程和结果。同时亦简要介绍了另外两种对莼菜危害较轻的摇蚊幼虫,描述了它们的形态和分布。最后作者对防治方法提出了探讨性意见。

Harmfulness of Chironomid Larvae to Brasenia schreberi Gmel.

The paper described how the leaves of Brasenia schreberi Gmel., an economic aquatic plant and a Chinese favourite dish, were destroyed by the Chironomid larvae, especially those of Cricotopus trifasciatus panzer, and the characteristics and their growth environment of that species were introduced in detail as well. Besides, the morphology and distribution of the other two species of Chironomid, namely, Corynoneura scuteUata Winnertz and Polypedilum sp.were briefly introduced. At last, the authors discussed the prevention and treatment methods of those pests.