排序方式: 共有43条查询结果,搜索用时 9 毫秒
41.
Procystiphora uedai sp. nov., a cecidomyiid inducing subglobular galls on Sasa nipponica Makino and Shibata on Mount Ôdaigahara, Nara Prefecture, Japan is described herein. This species is distinguishable from the three known congeners by the following characteristics of the female post-abdomen: tergite VIII concave at both anterior and posterior margins; tergites VII, VIII and sternite VII unsclerotized; ovipositor–dorsoventrally inverted. Most individuals of this gall midge are univoltine and pupate in the galls in early September, but some individuals enter prolonged diapause at the third larval stadium and remain in the mature galls until the following year. Larvae of this species are attacked by two parasitoid species, Pediobius sasae Hansson (Eulophidae) and Torymus sp. (Torymidae). 相似文献
42.
The ovipositors of two whitefly parasitoids, Encarsia transvena and Eretmocerus mundus were examined using scanning and transmission electron microscopy. That of Encarsia is straight, has an apparently hard and sharply pointed upper valve, and appears well-suited to penetrating a hard substrate. That of Eretmocerus is curved, thick-walled, but has a blunt and apparently flexible tip. These features correlate well with what is known of the mode of oviposition and host feeding in the two taxa, with Encarsia and Eretmocerus ovipositing internally and externally respectively. 相似文献
43.
ABSTRACT. The distal part of the ovipositor of Dasineura brassicae Winn. (Diptera; Cecidomyiidae) possesses forty to forty-five sensilla of three morphological types. Most are provided with a cuticular bristle, which projects from the surface of the ovipositor; fifteen have a taste/tactile function based on fine structural characteristics; about twenty-five are innervated by a single sensory cell, specialized for mechanoreception. Scolopidial sensory receptors are anchored to the cuticle inside the distal part of the ovipositor, they probably respond to changes in length of the ovipositor. Different sensory systems are involved in the choice of oviposition site; compound eyes and antennae are probably active in the earlier stages, whereas the receptors of the ovipositor appear well suited to govern the last steps in this behaviour. 相似文献