关键词: 蠓科, 吸血蠓, 生态研究

Abstract: Objective To study on ecological circumstance of blood-sucking midges from southern frontiers of Tibet in China.Methods Bed-curtain,light trap and insect net were used to collect midges.Results 65 species,3 genera were collected from 5 counties of southern frontiers of Tibet in China;30 species were collected from Chayu county,26 species from Nielamu county,24 species from Cuona county,10 species from Dingri county and 7 species from Yadong county.The dominant species were Culicoides tibetensis(53.0%)and C.maculatus(40.1%).The composition of species varied with different places,altitudes and seasons.The active durations were 140 days for C.maculatus and C.tibetensis.During active seasons,there were two peaks for C.maculatus,and only 1 peak for C.tibetensis.The 2 peaks of C.maculatus and C.tibetensis appeared at 1-2 hour before or after sunrise and sunset within 24 hours.C.horridud had 2 peaks at 11 O'clock and 16 O'clock within daytime.Conclusion This study provided ecological basis of sucking-blood midges from southern frontiers of Tibet in China.