Order Diptera Linnaeus, 1758 - true flies, mosquitoes, gnats Nematocera Latreille, 1825 Psychodomorpha 1 Family Canthyloscelidae Shannon, 1927 2 Family Perissommatidae D.H. Colless, 1962 3 Family Psychodidae Newman, 1834 - moth flies and sand flies 4 Family Scatopsidae Newman, 1834 5 Family Trichoceridae Kertész, 1902 - winter craneflies