Tens of thousands of Cicada septendecim from the XIX Brood are making an >80 decibel racket in my St. Louis, Missouri backyard garden. Totally gross and loud. Can someone please tell me what they are shooting out of their butts? Yuck! I took these videos on June 2, 2011. Some people think they are locust, but they are not, but it does feel like a plague with all these insects. Thank goodness I covered all 9 of my new fruit trees with netting…unfortunately, the un-netted serviceberries are getting the brunt of the cicada army. It will be a long 4-6 weeks until they are gone. Luckily they quiet down after dark.