曲牙土天牛Dorysthens hydropicus Pascoe属鞘翅目、天牛科、锯天牛亚科,是为害芦苇地下茎的主要害虫之一。关于在苇区的为害情况及生物学特性国内尚无报道,我们于1980—1984年对该虫进行了初步研究,现介绍如下。 一、寄主与为窖 据多年观察,在苇区主要为害获Miscanthus sacchariflorus Benth1—4号品种,其次是芦苇Phragmites communis Trin Dalytus hydropicus Pascoe is a Coleoptera, Cerambycidae, sawtooth Tianya subfamily, is one of the main pests damage underground stems of reeds. About the damage situation in the reed area and biological characteristics of the domestic no report, we conducted a preliminary study of the pest in 1980-1984, are presented below. First, the host and the cellar According to years of observation, the main damage in the reed area were Miscanthus sacchariflorus Benth1-4 varieties, followed by Phragmites communis Trin