小麦叶蜂是早春为害小麦的害虫,由于它发生期早,发生年份不定,往往被忽视给生产带来危害,为了解决这个问题,从1974—1977年我们对此虫陆续作了一些观察,现将四年来的工作整理如下。一、形态特征 (一) 成虫:雄虫体长8—8.8毫米,翅展15.8—17.0毫米;雌虫体长8.6—9.8毫米,翅展19.0—20.0毫米。体黑色,有兰色光泽。头能活动,复眼呈半园形,单眼3个。触角丝状,9节。口器为咀嚼式,唇基前缘园形凹 Wheat leaf bee is a pest infestation of wheat in early spring. Because it occurred early and occurred in an uncertain year, it is often neglected to bring harm to production. In order to solve this problem, we made some observations from 1974 to 1977, The four years of work are organized as follows. First, the morphological characteristics (a) adult: male body length 8-8.8 mm, wingspan 15.8-17.0 mm; female body length 8.6-9.8 mm, wingspan 19.0-20.0 mm. Body black, blue gloss. Head can move, compound eyes were semi-circular, monocular 3. Antenna filiform, 9 knots. Mouthparts for the chewing type, lip base concave front garden