Description of two new species of the genus Dasyhelea (Diptera Ceratopogonidae) from Beijing
- Author:
LIU Yangqing
;
YU Yixin
- Publication Type:Other Types
- Keywords:
Ceratopogonidae;
Dasyhelea genus;
new species;
Beijing
- From:
China Tropical Medicine
2025;25(3):368-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To further enrich the resources and Ceratopogonidae species in Beijing, an investigation and collection of biting midges in Lianshihu Wetland Park, Beijing, were carried out, leading to the description of two new species of the genus Dasyhelea in Beijing. Methods In September 2019, biting midges were collected in Lianhu Wetland Park, Beijing, using the net sweeping methods. The specimens were preserved in 75% alcohol for identification according to their morphological characteristics such as antennae and terminalia. Results A total of five species of biting midges belonging to the genus Dasyhelea were collected, including two new species: Dasyhelea extraneus Liu et Yu, sp. nov. and D. bibacula Liu et Yu, sp. nov. The main distinguishing characteristics of the two new species are as follows: In Dasyhelea extraneus, there is a tuberculate process in the middle of the posterior margin of the ninth sternite of the terminalia, the parameral lobes are fused into a bony strip with a short median process, and the aedeagal mesophallus has an obvious median process. In Dasyhelea bibacula, the posterior margin of the tergite of the terminalia is bluntly rounded, the aedeagal mesophallus is penholder-like, the ends of the two lateral branches are curved and fist-like, and the end of the median process of the parameral lobe is bluntly rounded. Conclusions This study describes two new species of the genus Dasyhelea in Beijing, enriching the midge resources in Beijing. The type specimens of the two new species are currently preserved at Nanchang Center for Disease Control and Prevention.
- Full text:202511191654397087319. Description of two new species of the genus Dasyhelea (Diptera Ceratopogonidae) from Beijing.pdf
