Seven new species of Limoniidae are described from Mongolia: Cheilotrichia (Empeda) tenuifurca (Hovsgol Province), Dicranomyia (Idiopyga) sineloba (Dornad Province), Dicranomyia (Melanolimonia) monkhtuyae (Hovsgol Province), Gonomyia (Gonomyia) curvispina (Bulgan Province), Limnophila (Limnophila) chinggiskhani (Hovsgol and Tov Provinces), Phylidorea (Macrolabina) temelskin (Hosvgol and Tov Provinces) and Symplecta (Symplecta) rotundiloba (Hovsgol Province). Descriptions and illustrations of the distinguishing morphological features, including wing venation, genitalia and antenna, are provided, with a discussion on distinguishing each of these newly described species from other similar species. Illustrations of the holotype of Symplecta tripilata (Alexander) (Kashmir) are presented for comparison with Symplecta rotundiloba. Illustrations of the male and female genitalia of Phylidorea nigronotata (Siebke) are presented for comparison with Phylidorea temelskin. Habitat information for each species is presented.
Species novae: Cheilotrichia (Empeda) tenuifurca, Dicranomyia (Idiopyga) sineloba, Dicranomyia (Melanolimonia) monkhtuyae, Gonomyia (Gonomyia) curvispina, Limnophila (Limnophila) chinggiskhani, Phylidorea (Macrolabina) temelskin, Symplecta (Symplecta) rotundiloba.