Nematocera (Iowa, USA).
Oriental Fruit Fly (Tephritidae: Bactrocera dorsalis), a highly destructive pest species that feeds on a wide variety of wild and cultivated fruits in Asia. (Chiang Mai, Thailand)
Marsh Fly (Sciomyzidae) from Iowa. Members of this family are also called snail-killing flies thanks to their larvae's habit of feeding on and parasitizing both terrestrial and freshwater snails.
