S. Mahunka szerk.: Folia Entomologica Hungarica 50. (Budapest, 1989)

L ROVARTANI KÖZLEMÉNYEK 1969 p. 61-65 Report on a collecting trip to Vietnam in 1988* By S. MAHUNKA, J. OLÁH and T. VÁSÁRHELYI (Received November 20, 1988) Abstract: Report on a collecting trip to Vietnam in 1988 - Collecting data of a trip to the Southern part of Vietnam in October, 1988 are given. Within the framework of an agreement between the Hungarian Academy of Sciences and the National Center for Scientific Research in Vietnam (Mahunka and Oláh,1988', we have organized the first collecting trip to the Southern part of Vietnam, as a continuation of three previous expeditions (see literature). During the expedition which was between 8th and 31st of October, 1988, we carried out collectings in Ho Chi Minh City (Saigon) and in Lam Dong Province. Below we give a short description of the collecting methods, the localities and the list of different collecting units. In the course of collectings the three authors devoted special attention to different groups and collecting methods. S. Mahunka made the investigation of the soil fauna with Berlese and Moczarsky-Winkler apparatus and netting in vegetation, J. Oláh performed collectings mostly by netting in various vegetations along all kinds of water (lakes, rivers, steems, tributaries and springs' while T. Vásárhelyi made collectings mostly from water and water surface by water net and from under bark. Singling as well as lamping were performed by all of us. Lamping in guest-houses in Ho Chi Minh City, Da Lat and Bao Loc was made with a 160 W blended light bulb (Tungsram HMLI), while lamping in the field was supported by a Honda generator and Tungsram 250 W mercury-vapour bulb. Our activity was focused on three geographical areas: 1. Ho Chi Minh City (Saigon, about 50 m above see level*, where we worked in the city and in a fish culture station nearby. 2. Da Lat (ca 1500 m above see level), where some visited places were on highland, dominated by plantations and agricultural areas, while others were in steep valleys covered by primary forests or secondary pine forests. 3. Bao Loc (ca 800 m, above see level* where we could collect both in agricultural areas and in primary rain forests situated on steep mountains along highway to the direction of Ho Chi Minh City. Beyond the zoological explorations two bilateral agreements were elaborated and signed. One agreement was on the survey of productivity of water reservoires on Plateau Tay Nguyen, while the other one was on cooperation in taxonomical and faunistical surveys and on establishment of a Natural History Museum with exhibition in Da Lat. This was the first expedition in the South and it would not have been realised without the generous help of the Ho Chi Minh Branch of the National Center for Scientific Research Hungarian zoological studies in Vietnam. No. 11. (il