牧草盲椿(Lygus Pratersis L.)属半翅目盲椿科。我省北部胡麻受该虫为害日趋严重,引起了人们的重视。现将我们1983、1984两年的观察结果报道于下。一、形态特征成虫体长5.5—6毫米,触角4节,比身体短,无单眼。夏型雌虫黄绿色,雄虫褐绿色,秋型雌虫枯黄色,雄虫黄褐色。前胸背板具桔皮状刻点,中部有4条纵纹,后缘有两个黑纹;小盾片黄色,近前缘有一倒 The forage grasses (Lygus Pratersis L.) belong to the family Hemiptera. The flax in the northern part of our province is getting worse due to the pest and attracts people’s attention. The results of our 1983 and 1984 biennial reports are reported below. First, morphological characteristics Adult body length 5.5-6 mm, antenna 4, shorter than the body, no monocular. Summer-type female yellow-green, male brown-green, autumn-type female yellow, male brown. Front and back with orange peel engraved point, the central 4 longitudinal stripes, the rear edge of two black stripes; small scutellum yellow, near the front of a down