论文部分内容阅读
原文中写到红颈天牛幼虫的生物学特性时提出:“幼虫一生钻蛀隧道长可达50—60厘米,隔一定距离于树皮上蛀一通气排粪孔;……。”和“幼虫老熟时于隧道端,木质部内,蛀椭圆形蛹室,头向上化蛹。”的两点生活习性,我们有不同看法。以在安徽合肥地区多年(自1974年起)观察红颈天牛的生物学特性结果,提供商讨: 一、红颈天牛初龄幼虫绝大部分在韧皮部和木质部间蛀食,于皮层下蛀成弯曲不规则浅沟状隧道,黄褐色虫粪堆积在隧道内,从树皮外不易觉察。初龄幼虫活动时期,有时于树皮外也发现少而细的虫粪从幼虫蛀入孔或通气孔排出,但多半自表层裂缝处排出。1979
The original text of the biological characteristics of Red-necked Beetle larvae said: “larvae boring tunnel length of up to 50-60 cm long, separated by a distance bored on the bark of a ventilation manure hole; ... ...” and “ Larger larvae mature at the end of the tunnel, the xylem, decapitated oval pupal chamber, head upward pupa. ”The two habits, we have different views. In Hefei, Anhui for many years (since 1974) to observe the biological characteristics of red-necked beetle results provide discussion: First, the red-necked beetle first instar larvae mostly in the phloem and xylem to eat, under the cortex into a bend Irregular shallow groove tunnels, brown tan pest accumulation in the tunnel, not easily detectable from outside the bark. During the first instar larvae, sometimes small but fine pest excrement is found outside the bark and excreted from the larvae or from the larvae, but most of them are discharged from the surface cracks. 1979