Survey of plant-mite fauna in southeast area of the Continent of Asia.

在这个项目中，我们试图重新整理与日本动物区系有关的东南亚禾本科螨类的分类。在中国和泰国进行的多次调查表明，存在一个主要发生在禾本科植物上的典型叶螨类群，即草螨种组。经过对大量标本的详细观察和rDNA序列的系统发育分析，我们得出了一个重要的结论，即该种组显然形成了一个独立的属。然后我们建议恢复Stigmaeopsis Banks属。此外，还描述了2个新种：SahraiStigmaeopsis n.sp.和S.takahashin.sp.。此外，本文还研究了福建省竹林中两种叶螨Aponychus corpujingensis和南京裂爪螨Schizotetranychus nanjingensis以及一种植绥螨Typhlodromus bestiae的迁移行为。结果表明，粘性屏障能有效地阻断南京松（S.nanjingensis）向1年生新梢和紫茎泽兰（A.corpuedium）向3年生新梢的迁移，但对植绥螨的迁移没有显著影响。虽然这一类群现在属于裂爪螨属，但我们正在研究确定这一类群的适当分类。目前正在观察中气门目等Otehr螨种，以确定日本与亚洲大陆东南部地区的关系。这些研究将在一段时间内完成，并在不久的将来发表。

In this project we have attempted to rearrange the taxonomy of mite species inhabiting Graminidae in southeast Asia in relation to Japanese fauna. Several surveys conducted in China and Thailand revealaled that there is a typical spider mite group which mainly occurs on Graminidae, i.e.celarius species group. After detailed inspection of many specimens and phylogenetic analyses by rDNA sequences, we have reached an important conclusion that this species group apparently form an independent genus. Then we proposed that the genus Stigmaeopsis Banks should be reinstated. Furthermore, 2 new species of Stigmaeopsis sahrai n.sp.and S.takahashi n sp are described Five species previously known as "celarius" species group in Schizotetranychus are then moved to Stigmaeopsis. Descriptions are supported by illustrations and scanning electron micrographs (Saito et al.2004).On the otehr hand, we studied on the migratory behavior of two tetranychid pest species, Aponychus corpuzae and Schizotetranychus nanjingensis, and one phytoseiid, Typhlodromus bambusae in several monocultural bamboo forests in Fujian Province, China. The results show that while the sticky barrier is particularly effective at disrupting the ambulatory immigration from the ground to new leaves of S.nanjingensis to 1-year-old shoots and of A.corpuzae to 3-year-old shoots, it has no significant effect on the immigration of the phytoseiid mite.We also found out another group which is very closely related with Stigmoeopsis in Thailand. Although this group is now belonging to the genus Schizotetranychus, we are now studying to determine appropriate taxonomy of this group.The otehr mite species such as Mesostigmata are now under observation in order to determine the relationship between Japan and southeast reagion of the Continent of Asia. These studies will be completed for a while and published in near future.