罗布麻蚜(Aphis Sp),原只在罗布麻上生活,1985年我们发现危害棉花,1987年危害棉田达一万余亩,已成为本地棉花苗期害虫之一。为此,我们于1986—1987年对罗布麻蚜开展了初步研究。 一、蚜虫形态特征 1.干母:成蚜体长1.45±0.05毫米,深绿色;触角5节,长约体长之半。 2.无翅孤雌成蚜:体长1.41±0.05毫米;头胸部和腹背第5节两侧及第6、7节为墨绿色,腹部其它各节呈黄绿色;复眼和 Aphis Sp (Aphis Sp), originally only on Apocynum, we found that endangering cotton in 1985, endanger the cotton fields in 1987 amounted to more than 10,000 acres, has become one of the local cotton seedling pests. To this end, we conducted a preliminary study of Apocynum venetum in 1986-1987. First, the morphological characteristics of aphids 1. Dry mother: aphids body length 1.45 ± 0.05 mm, dark green; antenna 5, about half the length of the body. 2. wing-free parthenogenetic aphids: body length 1.41 ± 0.05 mm; head and abdomen on both sides of Section 5 and 6,7 dark green, other sections of the abdomen was yellow-green; compound eyes and