New data on the occurrence of 122 Limoniidae and 17 Pediciidae species in Polish part Western Bieszczady Mountains is presented. Four species: Idiocera (I.) punctata (Edwards, 1938), Rhabdomastix (Rh.) laetoidea Starý, 2004, Lipsothrix ecucullata Edwards, 1938 (Limoniidae), Dicranota (Paradicranota) subflammatra 1998 (Pediciidae), are reported from Poland for first time. A general comparison co...