关键词: 室内蜚蠊, 啮小蜂, 昆虫卵, 培养基, 人工培养

Abstract: By appraisal of the common local house cockroaches, i. e. , the Periplaneta Fuliginosa, the Periplaneta Americana, and the Blattella Germanica, three kinds of parasitic wasps were found out, of which the tetrastichodes is the main kind. When these oothecae were cultivated separately, it was found that 3～201 heads of tetrastichodes emerged from each of the oothecae, whereas only one head emerged from each of two others. It was also discovered that when 278 heads of cockroach oothecae were caught, 249 of them belonged to the Periplaneta Fuliginosa (89. 5%), the predominant species; 25 of them belonged to the Periplaneta Americana(8.99%): and 4 of them belonged to the Blattella Germanica (1.44%). From April to July in 1987, 161 heads of oothecae of the Periplaneta Fulignosa were collected and the parasitic wasp held 105 oothecae (42.17%). The parasitic wasp reached its highest number of oothecae in May(53.93%) whereas the lowest in June (17.03%). Next. nine kinds of culture media were tested which were used for the cultivating of human intestinal bacteria, and it appeared that the tetrastichodes oviposited and developed from an egg to an imago in three media in which contained no insect eggs at all.