摘要
描述了微红梢斑螟Dioryctria rubella幼虫、蛹和成虫雌雄形态识别方法。3~5龄雄性幼虫第5腹节背面紫褐色,与相邻体节形成明显区别。雌蛹腹部第8~10腹节节间缝不明显,第8,9腹节的生殖孔连接成长条裂缝状,裂缝两侧微凹或平坦。雄蛹腹部第8~10腹节节间缝较明显,生殖孔位于第9腹节近后缘,纵裂状。生殖孔两侧各有一半球形瘤状。雌成虫触角丝状,密被短绒毛,腹部末端粗壮,圆筒形。雄成虫触角锯齿状,锯齿上密被长毛,腹部末端尖削,呈长钳状。
A method for quickly identifying the sex of larvae,pupae and adults of Dioryctria rubella Hampson was described. The male third to fifth instar larvae were puce on the back of the fifth abdominal segment which can be easily distinguished from the adjacent segments. In female pupa,the two seams of the eighth to the tenth segments were bisected and not obvious,the genital pores on the eighth and the ninth segments fused together,seemed to be a longitudinal slit and the two sides of the slit were concave or flat. Nevertheless,in male pupa,the two seams of the eighth to the tenth segments were intact and obvious,the genital pore was a longitudinal slit with a hemispherical protuberance on each side,located on the posterior of the ninth abdominal segment. The female adult＇s antennae were filiform,densely equipped with sensory hairs,and abdominal end appeared corpulent,round in shape. However,the male adult＇s antennae were serrate,with dense setae on each sawtooth,and had a slender abdomen with a forcipate end.
出处
《中国森林病虫》
北大核心
2014年第5期13-16,29,共5页
Forest Pest and Disease
基金
国家"十二五"科技支撑计划项目(2012BAD19B0703)
南京市建委
中山陵园管理局资助课题(200409)
江苏高校优势学科建设工程资助项目
南京林业大学南方现代林业协同创新中心资助项目
关键词
微红梢斑螟
幼虫
蛹
成虫
雌雄识别
Dioryctria rubella
larva
pupa
adult
sex identification
