Taxonomic study on the genus Kieffer from the Baishanzu Nature Reserve, China (Diptera, Chironomidae).

During the summer of July to September 2020, a biodiversity survey on Chironomidae of Baishanzu Nature Reserve, China was made. In total, five taxa/species were discovered, of which two belong to undescribed species and one ( Sasa, 1990) is reported for the first time from China. The male adults of two new species are described and illustrated.

First and second instar larvae and adults of a new species (Collembola, Entomobryidae) recorded from Xizang Autonomous Region with three new records.

Three new recorded species of genus were collected from Xizang Autonomous Region, China, in the present paper. Among them, a new species, Pan, , is included in the present paper. This new species can be identified by having a single uninterrupted dark band on central thoracic segment III; 14 macrochaetae on abdominal segment I and seven on the posterior central abdominal segment IV (half segment); and very short bothriotricha on abdominal segments II-IV.

On the genus , subgenus Collartomyia, with description of P. (Col.) baishanzuensis sp. nov. from Baishanzu Nature Reserve, China (Diptera, Chironomidae).

A new species of the genus Kieffer, 1912 is described from Baishanzu Nature Reserve, China, based on molecular and morphological data. Molecular phylogenetic analysis based on standard barcode sequences confirmed a new clade of Polypedilum (Collartomyia) species. The new species is easily distinguished from its congeners by a combination of the following morphological characters: membrane of wing with a large spot occupying 70% of the proximal area; tergite without dark brown band pigmentation; tarsi I-V dark brown; superior volsella with three outer lateral setae and six long setae along inner base; inferior volsella with setose tubercules.

Morphology lies: a case-in-point with a new non-biting midge species from Oriental China (Diptera, Chironomidae).

Morphological traits are generally indicative of specific taxa, and particularly function as keys in taxonomy and species delimitation. In this study, a non-biting midge species with an -like superior volsella makes it hard to accurately determined based on its morphological characteristics. Molecular genes of two ribosomal genes and three protein-encoding genes were compiled to construct a related genera phylogeny and to address the taxonomic issues.

Close relationship between the genera and (Collembola, Entomobryidae) revealed by adult and first instar characters, with description of a new species.

A third species of the genus is described from South China: This new species can be distinguished from the two other species of the genus by the following characters: colour pattern, single labial chaeta M, chaetotaxy on terga and ventral tube, unguis with three inner teeth, and 15 clypeal ciliated chaetae. Also, the chaetotaxy of the first instar of is described for the first time in the present paper, and confirms the close relationship between and . A key to species of is provided.