Systematics Of Milichiidae From China(Diptera)

The family Milichiidae belongs to the subordinate Acalyptrata, the suborder Brachycera, and is one of the smaller families in Diptera. The Milichiidae contains20genera453species in3subfamilies in the world fauna. It is distributed in all the zoogrographical realms. Larvae of most species are saprophagous and fungal grazers, adults are recoreded detritovores in leaf litter, decaying vegetation and birds’ nests, so they are beneficial since they speed up the process of decay and nutrient recycling; several genera feed on the mectar of small white or yellow flower so that they can play a role in pollination. The Chinese fauna of Milichiidae is extraordinarily rich, however, all the reports before the present dissertation were published by foreign dipterists.The present dissertation deals with the systematics of Milichiidae from China. The research history and current situation of Milichiidae at home and abroad are recalled. The biology and ecology of Milichiidae are briefly introduced. The morphological section of known genera and species of Milichiidae are elaborated thoroughly. A preliminary analysis on the distribution patterns of Milichiidae is discussed both on world and China scale. The results of statistics from the world fauna show that3subfamilies are all worldwidely distributed. The zoogeography of Milichiidae is briefly analyzed. It shows that single-region pattern is predominant; the Neotropical region holds the most abundant, the Oriental region has a fewer genera distributed. In the specific level, the Neotropical region and Oriental region are relatively predominant, the African region has a fewer species distributed, the minimum number of species is the Austrialian region. The results of statistics from the Chinese fauna show that the species from the Oriental region is significantly more than the Palaearctic region, the south China district is predominant both in the generic and specific levels, the species from the northeast China are the poorest in China.In the taxonomic section,11genera113species in3subfamilies from China are described, including1newly recorded genus,80new species,14newly recorded species. The genus Stomsis is newly recorded from China.80species are new to science, nine of which have already been published: Desmometopa lunaris sp. nov., Desmometopa maculosusa sp. nov., Desmometopa piceusa sp. nov., Letometopa xinjiangensis sp. nov., Neophyllomyza changbaishanensis sp. nov., Neophyllomyza flavescensis sp. nov., Neophyllomyza lu Xi et Yang,2014, Neophyllomyza luteipalpis Xi et Yang,2014, Neophyllomyza motuoensis sp. nov., Neophyllomyza obliquusa sp. nov., Neophyllomyza obtusus sp. nov., Neophyllomyza tibetensis Xi et Yang,2014, Paramyia ciliosusa sp. nov., Paramyia ciliosusa sp. nov., Paramyia latusa sp. nov., Paramyia nujiangensis sp. nov., Phyllomyza angustigenis Xi et Yang,2013, Phyllomyza acrostichalis sp. nov., Phyllomyza aureolusa sp. nov., Phyllomyza auriculatusa sp. nov., Phyllomyza baoshanenis sp. nov., Phyllomyza basilatusa sp. nov., Phyllomyza brevipalpis sp. nov., Phyllomyza breviproboscis sp. nov., Phyllomyza bulbiformisa sp. nov., Phyllomyza circularis sp. nov., Phyllomyza clavellata Xi et Yang,2013, Phyllomyza convexusa sp. nov., Phyllomyza cornis sp. nov., Phyllomyza crinitusa sp. nov., Phyllomyza cuspigera Xi et Yang,2013, Phyllomyza daliensis sp. nov., Phyllomyza dicrana Xi et Yang,2015, Phyllomyza drepanipalpis Xi et Yang,2015, Phyllomyza elliptica sp. nov., Phyllomyza emeishanensis Xi et Yang,2015, Phyllomyza equivenis sp. nov., Phyllomyza euthyipalpis Xi et Yang,2013, Phyllomyza flavipes sp. nov., Phyllomyza furviaristatum sp. nov., Phyllomyza fuscusa sp. nov., Phyllomyza gangliigormisa sp. nov., Phyllomyza gansuensis sp. nov., Phyllomyza gloriosa sp. nov., Phyllomyza glossophyllusa sp. nov., Phyllomyza guangxienis sp. nov., Phyllomyza hadra sp. nov., Phyllomyza lactea sp. nov., Phyllomyza latusipalpis sp. nov., Phyllomyza latustigenis Xi et Yang,2015, Phyllomyza lauxania sp. nov., Phyllomyza letophyllusa sp. nov., Phyllomyza lii sp. nov., Phyllomyza longiaristatum sp. nov., Phyllomyza longiseta sp. nov., Phyllomyza melanogastera sp. nov., Phyllomyza maolanensis sp. nov., Phyllomyza motuoensis sp. nov., Phyllomyza multijubatusa sp. nov., Phyllomyza nigrimarginata sp. nov., Phyllomyza oblatusa sp. nov., Phyllomyza obtusatusa sp. nov., Phyllomyza orbita sp. nov., Phyllomyza piceusa sp. nov., Phyllomyza planipalpis Xi et Yang,2015, Phyllomyza planta sp. nov., Phyllomyza prolongatusa sp. nov., Phyllomyza pronusipalpis sp. nov., Phyllomyza ruiliensis sp. nov., Phyllomyza sinensis Xi et Yang,2015, Phyllomyza singularisa sp. nov., Phyllomyza striolatum sp. nov., Phyllomyza verticalis sp. nov., Phyllomyza wangae sp. nov., Phyllomyza wolongensis sp. nov., Phyllomyza tibetensis Xi et Yang,2015, Phyllomyza yakouensis sp. nov., Phyllomyza yingjiangensis sp. nov., Phyllomyza yunnanensis sp. nov., Stomsis lvchunensis sp. nov..14species are newly recorded from China:Aldrichiomyza flaviventris Iwasa,1997, Desmometopa sabroskyi Brake,2003, Desmometopa varipalpis Malloch,1927, Milichilla arcuata (Loew,1876), Neophyllomyza acyglossa (Villeneuve,1920), Neophyllomyza leanderi (Hendel,1924), Paramyia latigena Papp,2001, Paramyia longilingua Papp,2001, Paramyia palpalis Papp,2001, Phyllomyza donisthorpei Schmitz,1923, Phyllomyza equitans (Hendel,1919), Phyllomyza japonica Iwasa,2003, Phyllomyza rubricornis Schmitz,1923, Phyllomyza tetragona Hendel,1924.103species are described with the taxonomically useful structures of male genitalia illustrated. The keys to separate genera and species are provided. The catalogue of world Milichiidae is made.