Species diversity and faunal composition of the superfamily Tenebrionoidea in southeastern Gansu Province
[Objective]The present work aims to analyze the fauna component of superfamily Tenebri-onoidea and the relationship between Tenebrionoidea species diversity of different sample region and alti-tude region,in southeastern Gansu Province.[Method]From 2020 to 2022,survey sampling was carried out in 72 sample plots at four different elevation gradients using the web catching method,the search method,the can catching method and the shake down collection method.Tenbrionoidea specimens were col-lected and organized.[Result]1 450 individuals of 116 species(subspecies)belonging to 48 genera of 11 families were identified,belonging to Tenebrionoidea.Among them,1 family of Cephaloidae,6 genera and 35 species were newly recorded in Gansu Province.In the zoogeographical division of the world,the Palearc-tic realm and Sino-Japanese realm components were the main species of Tenebrionoidea in the three cities of southeastern Gansu Province,accounting for 59.48%.In the zoogeographical division of China,56.87%of the components were shared between the northern region and the southwestern region.The result of α-di-versity analysis showed that the highest diversity index was found in Tianshui City with 2.1.Among the dif-ferent altitudes,the highest diversity index was found at the altitude of 1 000~1 500 m with 2.0.The β di-versity analysis result showed that the species composition similarity between Tianshui City and Longnan City was the highest,which clustered into one group with 0.77,and the Tenebrionoidea species composition similarity between 1 000~1 500 m and 1 500~2 000 m altitudes was the highest.which clustered into one group with 0.80.[Conclusion]The species diversity of Tenebrionoidea in southeastern Gansu Province was highest in Tianshui City and most similar to Longnan City.The faunal composition is mainly the Pa-laearctic realm and the Sino-Japanese realm in the world zoogeographic division,and mainly the northern re-gion and the southwestern region in the Chinese zoogeographic division.
ColeopteraTenebrionoideaspecies diversityfauna compositionsoutheast of Gansu Prov-ince