PaleoDB taxon number: 262464
Full reference: F. M. Hull. 1945. A revisional study of the fossil Syrphidae. Bulletin of the Museum of Comparative Zoology 95:251-355
Sister taxa: none
Type specimen: MCZ 3948, an exoskeleton. Its type locality is Dragon, which is in a Bridgerian lacustrine - large mudstone in the Green River Formation of Utah.