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Sitobion isodonis sp.nov.无翅胎生雌蚜(活虫):身体黄绿色,头部、身体的两大侧区、触角、足和腹管均为黑色。尾片灰黄色,复眼暗红色。透明标本:雌虫触角,腿节除基部小部分外,胫节和腹管都是黑色;尾片灰色;头部背面几乎光滑,仅在亚后缘区稍有皱纹,腹面有些小刺;背毛顶端钝或钝尖,大约为触角第三节基部直径的1.7倍那样长。腹面刚毛仅象背面的那样长。额瘤中等发达和分叉,具2钝或略呈锤形毛,中瘤小,有2根钝或小锤形的刚毛,
Sitobion isodonis sp.nov. Waxless viviparous female aphids (live insects): the body yellow-green, the head, the two sides of the body, antennae, feet and abdominal tube are black. Tail piece gray yellow, compound eyes dark red. Transparent specimens: female antennae, legs in addition to the base of a small part of the outside, the tibia and the abdomen are black; tail gray; the back of the head is almost smooth, only a slight wrinkle in the sub trailing edge, ventral spine; back The top of the hair blunt or blunt tip, about 1.7 times as long as the base diameter of the third antennae. The ventral bristles are just as long as the back. Forehead tumor moderately developed and bifurcate, with 2 blunt or slightly hammered hair, in the tumor is small, there are 2 blunt or small hammer-shaped bristles,