Taxonomic Study Of Genus Frankliniella And Odontothrips From China(Thysanoptera: Terebrantia: Thripidae)

The genus Frankliniella and Odontothrips belong to tribe Thripini, family Thripidae, suborder Terebrantia, Thysanoptera.There are 228 known species of the genus Frankliniella in the world, mostly distributed in Southern and Northern America. In China, there are 11 known species. The species of this genus mainly feed on the flowers and younger leaves of many plants, and some of which are pests for important economic crops and floricultural products. They can cause significant color change, leaf shrinking and surface of flower fading, resulting in reduction of crop production and flower visual value. The species, Frankliniella intonsa and F. occidentalis, can transmit several plant viruses. The latter one is an important invasion pest in China, known in recent years, and has made serious damages in the northern China. Odontothrips is a small genus of thrips, mainly distributed in Euro-Asia, North America and Africa. The genus only includes 31 species worldwide and seven of them from China. The genus mostly infest the species of Fabaceae. In China, they were discovered to damage the alfalfa and sainfoin in Gansu Province, Inner Mongolia Autonomous Regions and the other parts of North China. Thus, the research on the thrips is very useful for the theoretical study, agricultural and floricultural production, to provide the basal data for Chinese thrips species diversity, to study the fauna and phylogeny of thrips in China, and to give directions for controlling the pests in the agriculture and forestry. Based on the abundance of Chinese specimens and literatures, the two genus were revised here.In the general part, the research history of the genus Frankliniella and Odontothrips were outlined. The comparative morphology was summarized and the thrips biology was introduced, including reproduction, growth and development, feeding habits, migration and diffusion. Based on the specimen records and literatures, the species diversity, the fauna and the distribution pattern of Frankliniella and Odontothrips in China were discussed.In the taxonomic part,13 species in Frankliniella and 12 species in Odontothrips from China were reviewed. About 3000 specimens were examined, deposited in the National Zoological Museum of China (NZMC), Institute of Zoology, Chinese Academy of Sciences. The descriptions of 18 species, keys of species in each genus and features of each species were provied here, including 5 species new to science and 2 species first recorded from China.The five new species are Frankliniella chinensis sp.nov., F. xiamenensis sp.nov., Odontothrips bispinosus sp.nov., O. chelionus sp.nov. and O. sicoloreus sp.nov.The two new record species to China are Odontothrips intermedius (Uzel,1895) and O. mongolicus Pelikan,1985.