The Dolichopidae are small flies not exceeding eight millimeters in length, and are almost always bright metallic green or blue in color. The adults are found especially ahundant on plants around sand and mud, as well as on rocks and plants in the water. They are predaceous flies living on small, soft bodied insects. The genera Laxina, Condylostylus and Sciapus may be found on leaves of shaded flowers in search of food. These flies may be readily distinguished from the members of other families by the absence of a cross vein between the discal and the second basal cell, these uniting to form a single cell.
Proceedings of the Iowa Academy of Science
©1938 Iowa Academy of Science, Inc.
Berger, Bernard G. and Jaques, H. E.
"A Preliminary List of the Dolichopidae of Iowa,"
Proceedings of the Iowa Academy of Science, 45(1), 281-282.
Available at: https://scholarworks.uni.edu/pias/vol45/iss1/77