This is a question for you entomology experts. I live in Colorado and I don't know if I didnt pick up on this noise the past years or if it's just this year but I have been hearing, at night, this noise that sounds like two marbles clicking together first kinda slow and than it gets a little faster. it only lasts like 5-10 clicks. This summer especially in the spring has been very wet and I have seen a few more insects that I only normally see only in Nebraska, here. They are not the cicadas and do not sound anything like those. I know that they live in trees and up high areas and they only make noise at night. I caught a glimpse of one on a buildings 3rd floor window so I know its an insect making the noise. It seemed like a pretty large insect for Colorado. Can anybody identify? this has been driving my crazy all summer, I figured I would have seen what it is by now.