咖啡黑(枝)小蠹成虫触角感受器的扫描电镜观察

Antennae Structure of Adult Xylosandrus compactus Observed with Scanning Electron Microscope

对咖啡黑(枝)小蠹(Xylosandrus compactus)雌、雄成虫触角感受器进行了扫描电镜观察。结果表明:咖啡黑(枝)小蠹雌、雄成虫之间触角形态、感受器类型和分布均无显著差异。成虫触角具有5种感受器:毛形感受器(Ⅰ、Ⅱ)、锯齿形感受器、锥形感受器、芽形感受器和刺形感受器,其中毛形感受器数量最多,占总感受器的57%,刺形感受器数量最少,仅3%。各种感受器在触角各节上的分布数量显著不同,柄节、梗节感受器数量较少,分别约占感受器总数的4%和3%;鞭节分布的感受器数量最多,约占93%,其中约85%的感受器集中分布在锤状部末端。

The antennae structures of female and male Xylosandrus compactus were observed with a scanning electron microscope. The results showed that there were no significant differences in the antennae morphological characters, sensilla types and their distribution patterns between sexes.The sensilla was identified for five types： sensilla trichodea （I, U ）, zigzag sensilla, scnsilla basiconica, bud-shaped sensilla and sensilla chaetica. Sensilla trichodea was the dominant type, which accounted for more than 57%, while the number of sensilla chaetica was the least, only 3%. Most of the sensilla （about 93%） was distributed on the funicle of the antenna, of which about 85% of the sensilla was mainly distributed on the club.There were less sensilla on scapus and pedicel, only about 4% and 3%, respectively.