关键词: 草地螟, 寄生蝇, 寄生方式, 调控作用, 保护利用

Abstract: Tachinids are among the important endoparasitoids for the meadow moth, Loxostege sticticalis (Lepidoptera: Pyralidae). In most cases, the parasitism rate of tachinids is far higher than that of hymenopterous parasitoids, which exhibits a great potential to regulate the population of meadow moth. In this paper, the tachinid species parasitizing on the meadow moth, types of parasitism, the dominant species and their roles in controlling the host population as well as their protection and utilization were reviewed by combining the results derived from field investigations and literatures. The species of tachinid parasitoids for the meadow moth were as many as 22 species, which were widely distributed along with the meadow moth and most of them were with a broad host range of other phytophagous species. Four dominant species were recorded: Exorista civilis Rondani, Nemorilla maculosa Meigen, Clemelis pullata Meigen, and Exorista pratensisRobincau-Uesvoidy. It was found that the controlling effect of these tachinid species on the current generation of meadow moth is limited; however, they could play an important role in controlling the next generation of meadow moth. The conservation and utilization of the tachinid parasitoids were also discussed based on these prospects.

Key words: Loxostege sticticalis, tachinids, parasitic method, controlling effect, conservation and utilization