New and rare aquatic Diptera (Dixidae, Thaumaleidae and Empididae) from Spain and Andorra

Twenty-two species of aquatic Diptera have been collected from 16 sites on the Iberian peninsula. Three Dixidae : Dixa nebulosa Meigen, D. puberula Lo ew, D. submaculata Edwards; three Thaumaleidae: Thaumalea miki Edwards, T. pyrenaica Edwards, T. verralli Edwards; and sixteen aquatic Empididae (Heme rodromiinae and Clinocerinae): Hemerodromia adulatoria Collin, H. baetica C ollin, H. gaditana nov. spec., Wiedemannia mirousei Vaillant, W. fallaciosa (Loew), W. hygrobia (Loew), W. digitata Vaillant, W. tiburica nov. spec., Clinocera barbatula Mik, C. madicola Vaillant, C. tenella Wahlberg, C. nigr a (Meigen), C. fontinalis (Haliday), C. stagnalis (Haliday), C. wesmaeli Ma cquart and Dolichocephala ocellata Costa. Two species are new to science an d several others are recorded for the first time in Spain or Andorra, altho ugh their occurrence was expected because many records were based on collec tions from the French Pyrenees.