Several specimens of Pollenia rudis (Fab.) were taken by the author and Glenn Primmer Jr., between Vinton and Garrison, Iowa, on July 5, 1941, following a cold rain and hail storm. These had been observed prior to the storm on white sweet-clover along the railroad track, but were so active as to elude the net. Benumbed by the storm, several specimens were secured by sweeping the wet sweet-clover.
Proceedings of the Iowa Academy of Science
©1943 Iowa Academy of Science, Inc.
Jones, David T.
"A Rare Variant of Pollenia Rudis, the Iowa Winter House-Fly,"
Proceedings of the Iowa Academy of Science, 50(1), 345-346.
Available at: https://scholarworks.uni.edu/pias/vol50/iss1/35