From the event page: 

Galls are intriguing plant structures induced by insects (usually), creating a sheltered home for the larval stages of the inducing organism. They have diverse and sometimes incredible shapes and colors, and their natural history is equally fascinating, with complex life cycles, tiny opportunistic parasitoids, and more!

Michael Hawk (Nature's Archive podcast and Jumpstart Nature) and Dr. Merav Vonshak (BioBlitz Club) will talk about gall biology, common host plants and gall inducers. They will discuss how you can find and identify galls, with numerous examples including gall look-alikes.

RSVP link is posted here.