雄蚤阳茎体的研究：角叶蚤科三种雄蚤阳茎体的观察

用光镜和扫描电镜观察鞋形共系蚤Syngenopsyllus calceatus (Rothochild)、无值大锥蚤Macrostylophora euteles (Jordan et Rothschiold)和不等单蚤Monopsyllus anisus(Rothechild)的阳茎体侧面、背面和腹面。其中三种蚤阳茎体的背、腹面和无值大锥蚤阳茎体的侧面形态结构是首次报道。鞋形共系蚤有一对明显的阳茎囊突和一对与其相连的"c-骨片"， 首次报道该蚤具有前距。无值大锥蚤具一对“茄形骨片”，阳茎钩突末端分为长而宽的腹叶和短而末端尖的背叶，阳茎内突后半部分特化为“后阳茎内突”。三种蚤的钩突桩略呈牛角形，由后弯向前。三种蚤阳茎体的形态结构差异显著，指出了它们是分类上值得注意的特征。认为交配时阳茎杆只在一定范围内作定向滑动。将阳茎体从蚤体内解剖出来，并且观察其背腹面，有助于清晰、完整和准确地观察其形态结构。

STUDIES ON FLEA PHALLOSOME: OBSERVATION ON CERATOPHYLLIDAE

Three species of fleas in Ceratophyllidae were studied. They include Syngenopsyllus cac-ceatus, Macrostylophora euteles and Monopsyllus anisus. The lateral, dorsal and ventral sides of their phallosomes were observed with light and scanning electron microscopes. There are a pair of C-sclerite and a pair of diverticulum at the base of aedeagal pouch in S. calceatus. In M. euteles there is a pair of aubergine-shaped sclerite. The apex of the aedeagal crochet is divided into dorsal and ventral lobes. The anterior end of the aedeagal apodeme is different from its specialized posterior end. The paxillus of these three species is in the shape like ox horn and protrudes anteriorly, the taxonomic characteristics in these three species are discussed. It is suggested that the penis rods slide between the median and lateral laminae during copulation.