云南野生稻新害虫——食禾梯管蚜

 食禾梯管蚜(Brachysiphoniella graminivora)于2000年由张丽坤和张广学定名,模式标本采自云南昆明的无翅孤雌蚜。笔者于2003年4月在云南省农业科学院农作物品种资源站的野生稻上发现大量蚜虫危害,经鉴定是食禾梯管蚜。对其有翅孤雌蚜的形态特征作了详细研究和描述,并列出梯管蚜属(Brachysiphoniella Takahashi)已知3种的有翅孤雌蚜和无翅孤雌蚜检索表,提供实际工作中鉴别使用。

Yunan New Pest of Wild Rice--Brachysiphoniella gramivora Zhang et Zhang

Brachysiphoniella graminivora was described as new species by Zhang Li-kun and Zhang Guang-xue in 2000,The holotype was apterous viviparous female. This paper is reported that wild rice be intested with Brachysiphoniella graminivora in Kunming Yunnan, and described morphologcal character of alate viviparous female, a key of the species to Brachysiphniella Takahash is given.Alate viviparous female of Brachysiphoniella graminivora: Measurements(in mm):Body 1.433 in length, 0.653 in width, Head and prothorax seperated, Antennae 6-segmented 1.127 in length,Ⅰ～Ⅵ: 0.075, 0.057, 0.227, 0.184, 0.193, 0.129+0.264. Secondary rhinaria on segments Ⅲ～Ⅴ each with 13～24,1～14,1～5. Ultimate rostral segment 0.052. Hind femur 0.404,hind tibia 0.623,and 2nd hind tarsal segment 0.062 in Length. Siphunculus 0.030. Cauda 0.157. other data same as apterous viviparous females.