I wonder how much benefit came from the research they did like this. Thanks Steve!

Bug splatting on windshields gave entomologists an idea, so they rigged a funnel-shaped screen onto the side of a car.

 At the back of the funnel was a little bag to collect the netted insects.

This 1938 silver gelatin print from the OSU archives shows Ken Gray, an AES entomologist, and the Bugmobile he used to collect insects in the field.

 After driving a few miles past agricultural fields, Gray and his colleagues from USDA could collect enough bugs to tell which field pests had emerged and were flying at that moment in any given district.

https://www.jalopyjournal.com/forum/threads/vintage-shots-from-days-gone-by.428585/page-6611
https://oregonprogress.oregonstate.edu/summer-2004/update