Crustacean Biogeography in Equatorial area of Southeast Asia

今年是东南亚赤道地区甲壳类生物地理野外研究的最后一年。山口、和田、田中和冢越对巴厘岛、苏拉威西岛、西帝汶、龙目岛和印度尼西亚的松巴哇群岛进行了实地考察。在Balanus amphitrite复合体中，发现了amphitrite、B. kondakovi、B. reticulatus、B. variegatus、B. venusus、B. rhizophorae、B. zhujiangensis和B. patelliformis。另外3种，B. patelliformis， B. rhizophorae， B. zhujiangensis，除了这些类型的地点外，在野外调查中发现，其生物地理分布是科学上的新发现。我们可以在印度-西太平洋找到许多藤壶分类群，而只在大洋洲地区发现的Austrobalanus是在巴布亚新几内亚发现的。在巴厘岛已记录有九种蛇足科。其中，有一种已被发现为未被描述的种。苏拉威西岛北部已记录到11种棘足虫科。其中，在菲律宾吕宋岛也发现了一种未被描述的Ilyoplax属。本种与分布于西太平洋大陆海岸的东方棘球绦虫和丹斯棘球绦虫有形态上的相似性。分子系统发育分析表明，与未描述种相比，东方杉和丹斯杉的亲缘关系更为密切。24个样本（其中13个来自巴厘岛）。11只来自苏拉威西岛)，用于介形类的研究。其中6个为间质动物群。经鉴定有软肢的有12属22种。其中2种为未描述种，4种为澳大利亚Hartmann（1978）报道的种所共有。

This is the final year for field research on Crustacean Biogeography in Equatorial area of Southeast Asia. Yamaguchi, Wada, Tanaka, and Tsukagoshi had a field trip to Bali, Sulawesi, West Timor, Lombok, and Sumbawa Islands of Indonesia. In the Balanus amphitrite complex, B. amphitrite, B. kondakovi, B. reticulatus, B. variegatus, B. venustus, B. rhizophorae, B. zhujiangensis, and B. patelliformis were found in the area. The last three species, B. patelliformis, B. rhizophorae, and B. zhujiangensis have never been found except for those type localities, in our field trip we can find them and those biogeographic distributions are new to science. We could find many taxa of barnacles found in the Indo-West Pacific, however, Austrobalanus that has been only known in region of Oceania is found at the Papua New Guinea.Nine species of the family Ocypodidae have been recorded from Bali. Among them, one species of the genus Tmethypocoelis has been found to be an undescribed species. Eleven species of Ocypodidae have been recorded from northern Sulawesi. Among them, one species of the genus Ilyoplax has been found to be an undescribed species that was also collected in Luzon of the Philippines. This species is morphologically similar to two congeneric species of I. orientalis and I. tansuiensis, which are distributed in continental coast of the western Pacific. Molecular phylogenetic analysis has revealed that I. orientalis and I. tansuiensis are more related to each other than to the undescribed species.Twenty-four samples (13 from Bali Is. and 11 from Sulawesi Is.) were collected for study on Ostracoda. Six of them were for interstitial fauna. Twelve genera and twenty-two species were identified with soft parts. The two species of them must be undescribed species and the four of them are common to the species reported by Hartmann (1978) from Australia.