New records and a new species of the subgenus Antocha (Antocha) Osten Sacken, 1860 (Diptera, Limoniidae) from Northwest China

Only a single species of the subgenus Antocha (Antocha)Osten Sacken (1860) was previously known to occur in Northwest China. In this study, four additional species are added to the regional fauna: A. (A.) bimaculata sp. nov. is described and illustrated as new species, while A. (A.) chonsaniana Podenas, 2015, and A. (A.) turkestanica de Meijere, 1921, which are reported from China for the first time, are illustrated in detail. Additionally, A. (A.) bifida Alexander, 1924, is recorded for the first time recorded in Northwest China. Furthermore, a key to the species of the subgenus Antocha (Antocha) in Northwest China is presented.