金银花尺蠖幼虫头部化学感受器扫描电镜观察

Observation on the larval head chemoreceptors of honeysuckle geometrid Heterolocha jinyinhuaphaga Chu with scanning electron microscope

为了解金银花尺蠖Heterolocha jinyinhuaphaga Chu幼虫头部化学感受器的种类、形态、数量和分布,利用扫描电镜技术观察其老熟幼虫头部形态及触角和口器上的化学感受器。结果表明,金银花尺蠖老熟幼虫头部呈椭圆形;触角上着生1个毛形感受器、3个刺形感受器、1个栓锥形感受器和2个锥形感受器;上颚分布有1对毛形感受器;下颚分布有3个毛形感受器、2个刺形感受器、2个栓锥形感受器和8个锥形感受器;下唇须上有1个栓锥形感受器和1个刺形感受器;在吐丝器前方两侧有1对刺形感受器。金银花尺蠖幼虫触角上的化学感受器较少,口器附肢上化学感受器较多。

In order to determine the types,morphology,quantity and distribution of chemoreceptors on the larval head of honeysuckle geometrid,Heterolocha jinyinhuaphaga Chu,the head shape and chemoreceptors on mature larval antennae and mouthparts of H.jinyinhuaphaga were observed with scanning electron microscope.The results showed that the mature larval head was oval and hypognathous.One sensillm trichodea,three sensilla chaeticum,one sensillum styloconicum and two sensilla basiconicum were observed on the antenna.Two sensilla trichodea were found on the mandible,and three sensilla trichodea,two sensilla chaeticum,two sensilla styloconicum,and eight sensilla basiconicum were found on the maxilla.One sensillum styloconicum and one sensillum chaeticum were found on labial palpus,and one sensillum chaeticum was found on the front of each sides of fusula.The number of chemoreceptors on larval mouthparts was more than that on antennae.