Guide to the insects of Connecticut. Part VI. The Diptera or true flies of Connecticut. First fascicle. External morphology; key to the families; Tanyderidae, Ptychopteridae, Trichoceridae, Anisopodidae, Tipulidae. Bulletin Connecticut Geological and Natural History Survey, no. 64 1942: x + 609 pp.. 230 [Zoological Record Volume 80]