Analysis on the fauna composition of Thysanoptera in the Shaanxi Qinling-Daba Mountains area

In order to understand the species diversity and faunal characteristics of Thysanoptera insects in the Qinling-Daba Mountains area of Shaanxi Province, this study investigated Thysanoptera insects and preliminarily analyzed the fauna of thrips. The results showed that: (1) A total of 108 species belonging to 44 genera and 4 families were identified, which included five newly recorded species from China: Chirothrips propinquus zur Strassen, Apelaunothrips montanus Okajima, Bamboosiella longirostris Okajima, Haplothrips nipponicus Okajima and Liothrips wasabiae Haga & Okajima, and 25 newly recorded genera and 62 newly recorded species from Shaanxi; (2) Among the world zoogeographic realms, the Oriental realm had the highest number of genera and species, with 44 genera and 108 species, which was followed by the Holarctic realm with 40 genera and 81 species; and the Neotropical realm with the lowest number of genera and species, consisting of only 10 genera and 14 species; (3) Within the zoogeographic regions of China, the Central China region had the highest number of genera and species (44 genera and 108 species), followed by the Southern China region (36 genera and 70 species), and the Northeastern China region had the lowest number of genera and species (9 genera and 17 species); (4) Regarding the distribution patterns of species, the combination of Central China and Southern China regions had the highest species richness (29 species, 26.85%). The genera and species levels of Thysanoptera in Qinling-Daba Mountains area of Shaanxi Province were showed as follow: the Oriental realm (100%, 100%) > the Holarctic realm (90.91%, 75%) > the Nearctic realm (36.36%, 25.91%). The composition in the Oriental realm was the most significant, and it was closely related to the Holarctic and Nearctic realms. In the zoogeographic regions of China, Central China (100%, 100%) > Southern China (81.82%, 64.81) > Northern China (50%, 34.26%) in both genera and species levels showed the most significant characteristics in Central China region, which was closely related to Southern China region and Northern China region, followed by Southwest China region, Mongolia-Xinjiang region and Qinghai-Tibet region, with the weakest connection to Northeastern China region.