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桃蚜食性杂、寄主广。但桃蚜能在麦类作物上严重发生为害却罕见报道。笔者今年5月中旬在西藏米林县里龙乡才巴村麦田调查时发现,凡田边地头蚜虫较多的桃树的下面,小麦、青稞植株上也有蚜虫严重发生(多分布在植株中上部叶片上)。分别带回室内镜检,发现其形态特征一致:无翅胎生雌蚜黄绿色,头部有显著内倾的额瘤。有翅蚜头及胸部黑色,额瘤显著内倾。腹部黄绿色,背面中央有一大黑斑,
Peach aphid feeding Miscellaneous, host wide. However, the peach aphid can be seriously damaged in wheat crops is rarely reported. In mid-May of this year, when investigating the wheat fields in Caiba village, Lilong Township, Millington County, Tibet, it was found that there was also aphids in the wheat and barley plants below the peach trees with more aphids on the edge of the fields (mostly distributed in the upper part of the plants Leaves on). Respectively brought back to the room microscopic examination and found that its morphological characteristics are consistent: wing-viviparous female aphids yellow-green, the head has significant lean forehead. A winged head and chest black, forehead significantly introverted. Abdomen yellowish green, the back of a large dark spot in the center,