Hi Sally.  Thanks for contacting the UVM Extension Master Gardener Helpline.

It's not completely clear from the photo you sent, but I think you've found a Northern Dog-day Cicada.  They're an annual cicada and they're on the move in August in Vermont so the timing is right.

Here's more information from a wonderful Vermont natural history resource.  (Please scroll down to the part about the cicada with some great photos.)
https://vtecostudies.org/blog/field-guide-to-august-2019/

Hope this helps.  Enjoy your visitor!