Not long ago, I was picking Dr. Shetlar's brain (Entomologist in OSU's Turf Dept) about Crane Flies. If I remember what he said correctly, he made mention of a symbiotic relationship that crane flies have with chinch bugs. If I remember correctly, he said that where ever you see crane flies flying up out of the turf, there's an excellent chance (if not a 100% chance) that chinch bug detrius is present also. If I remember what he told me correctly, he said that the crane flies pupate in chinch bug detrius. If anyone can steer me straight on how this works, I'd be more than grateful. It's been a long time since Dr. Shetlar and I had that talk and I want to be clear on the facts. To be honest, I'm so unclear on what he told me, that he could have told me that it was MY detrius that crane flies come from for all I know.