摘要
观察从广西崇左市三角椰（Neodypsis decaryi Jumelle）受害植株收集到的90头红棕象甲〔Rhynchophorus ferrugineus（Olivier）〕成虫,发现其色斑数量为2~8个/头或10个/头,其中以6个色斑的个体为多数;色斑数量与虫体长度没有明显的相关性;色斑分1~2行排列,但以分2行排列为主,各行色斑数量不固定;色斑形状有9种;色斑大小不一,以长度2 mm为多数。
Based on the observation on 90 adults of Rhynchophorus ferrugineus Olivier collected from infected Neodypsis decaryi Jumelle planted in Chongzuo,Guangxi,it comes out that the amount of mottle is 2～8 or 10 per head,and 6 per head for the most.There is no obvious correlation between mottle amount and insect length.Mottles range in 1～2 rows,but majority in 2 rows,and the number of mottle in various rows is not fixed.Shape of mottle includes 9 various types.Measure of mottle changes greatly with a high percentage of 2 mm in terms of length.
关键词
红棕象甲
色斑型
三角椰
Rhynchophorus ferrugineus Olivier
mottle type
Neodypsis decaryi Jumelle
