Locust Borer on goldenrod.
I think its really cool that the Locust borer is the new bug of the month for October. I have seen several this season and taken some pictures. This is the best one. Hope you enjoy it as much as I enjoy your website, which is a lot!
Adult Locust Borers are active in the fall, and are commonly associated with goldenrod where they feed on nectar and pollen..