红脂大小蠹成虫触角扫描电镜的观察

对红脂大小蠹雌雄成虫进行了触角扫描电镜的观察,观察结果表明红脂大小蠹雌雄之间触角形态没有显著差异,触角锤状部感受器的分布最为丰富,约占全部的94．5％左右,柄节感受器较多占全部的4％左右;鞭节的感受器较少,只占全部的1．5％左右。触角上的感受器可以分为4种：毛形感受器、刺形感受器、锯齿形感受器和芽形感受器。毛形感受器、刺形感受器和锯齿形感受器分别约占70％、24％和6％,芽形感受器非常少。锯齿形感受器着生于柄节和鞭节上;毛形感受器和刺形感受器只着生于锤状部;芽形感受器主要着生于柄节的基部。

Scanning Electron Microscope Observation on Antenna of Red Turpentine Beetle (Dendroctonus valens LeConte)

Antennae surface structure and morphological characters of male and female red turpentine beetle,Dendroctonus valens, were observed with scanning electron microscope (SEM). The results showed that there were not much differences between the structure of male and female. Most of the sensilla were distributed on the club of the antenna which ocupied 94.5%, while only 4% and 1.5% on scape and funicle. All of the sensilla could be divided into 4 types: sensilla trichodea, sensilla chaetica, sawtooth shape sensilla, and bud shape sensilla. Sensilla trichodea, sensilla chaetica, sawtooth shape sensilla respectively acounted for 70%, 24%, 6%; bud shape sensilla was extremely rare. Sensilla trichodea and sensilla chaetica only distributed on the club, sawtooth shape sensilla on the scape and fanicles, while bud shape sensilla mainly on the base of scape.