关键词: 蛴螬群落, 生境, 多样性, 相似性

Abstract: From 1998-1999,we studied the features of Scarabaeoidea larvae community in different habitats. The results showed that: Serica orientalis Motschulsky is the dominant species in all three sites. For different habitats, they have differ ent common species. In Inner Mongolia typical steppe, they are Trematodes tene brioides (Pallas) and Cyriopertha arcuata(Gebler). But for Horqin sandy l and and Tenger desert ecosystem, they are Anomala exoleta Faldermann, Hopl osternus incanus Motschulsky and Anomala exoleta Faldermann. From the results, we can essentially conclude that the Scarabaeoidea larvae community is very simple in Tenger desert ecosystem. In Horqin sandy land, the density of Scarab aeoidea larvae community is not higher than that of in Inner Mongolia typical steppe, but the number of species is higher than that in relative Inner Mongolia typical steppe. And the biodiversity indexes of Scarabaeoidea larvae community are highest for all three sites. Between Horqin sandy land and Inner Mongolia typical steppe, the similarity index of Scarabaeoidea larvae community is higher than that of bet ween Horqin sandy land and Tenger desert ecosystem.

Key words: Scara baeoidea larvae community, habitats, biodiversity, similarity