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Wuyishan National Park is well known for its rich biodiversity. Previously, only five species of Hybos Meigen, 1803 were known to occur in this region. In this study, 27 species of the genus Hybos from Wuyishan National Park are reviewed based on comparative morphological characteristics. Among these, nine species are described as new to science: Hybos brevidigitatus sp. nov., Hybos constractus sp. nov., Hybos curvitibia sp. nov., Hybos dazhulanus sp. nov., Hybos fujianensis sp. nov., Hybos leucopogus sp. nov., Hybos longidigitatus sp. nov., Hybos modificatus sp. nov., and Hybos wuyishanus sp. nov. Diagnoses, detailed descriptions, remarks, colored illustrations, distributions, and some of the female terminalia characteristics are provided for nine new species. In addition, 13 species of this genus are reported for the first time in Wuyishan National Park. A key to Hybos species from Wuyishan National Park is also given. [ABSTRACT FROM AUTHOR]

Abstract: Three new species of fossil snipe flies (Insecta, Diptera, Rhagionidae) from the Daohugou Formation of Chifeng City in Nei Monggol Autonomous Region (= Inner Mongolia), northeastern China are described as Palaeobolbomyia sinica nov. sp., Ussatchovia robusta nov. sp. and Ussatchovia gracilenta nov. sp. They represent the first records of the genera Palaeobolbomyia Kovalev and Ussatchovia Kovalev in China and have implications for stratigraphic correlation of the formations in which they are found. Although the precise age of the Daohugou Formation is currently unresolved, it is most likely Callovian-Oxfordian (latest Middle Jurassic-earliest Late Jurassic) rather than early Middle Jurassic (late Aalenian-early Bajocian) or Early Cretaceous. [ABSTRACT FROM AUTHOR]

Four new Brachycera fossils were collected from the Daohugou biota, China. Among these, two impressions demonstrating peculiar wing venation can be designated as two new species of a new genus ( Mostovskisargus portentosus gen. et sp. nov. and M.  signatus sp. nov.) referred to a new subfamily Mostovskisarginae (subfam. nov.) within Archisargidae. The third impression belongs to a new species ( Calosargus ( Pterosargus) sinicus sp. nov.) referred to the subgenus Pterosargus Mostovski, 1997 of Calosargus Mostovski, 1997 within Archisarginae, Archisargidae. It is only the second member of the subgenus Pterosargus worldwide. The fourth impression is a nearly complete fly, Jurassinemestrinus orientalis gen. et sp. nov. referable to Rhagionemestriidae. It reveals new morphological data about rhagionemestriids and extends the geographical distribution of this group beyond Europe and Central Asia during the Mesozoic. A correlation for the archisargid composition of taxa in Daohugou and Karabastau formations is discussed. The age of the fly-bearing strata is briefly reassessed and can be more accurately limited to the Callovian–Oxfordian based on both biostratigraphical correlation and radiometric dating. [ABSTRACT FROM AUTHOR]